2^3x+2=4^x+5

4^x*2^x-4^x=5-2

4^x(2^x-1)=3

số số chẵn có 4 chữ số là:

(9998-1000):2+1=4500(số)

đáp số: 4500 số

Cấu trúc câu sử dụng in order to và so as to
1. Khi mục đích của hành động hướng tới chính chủ thể của hành động được nêu ở phía trước

S + V + in order/so as + (not) + to + V ….

Tình huống 1: I worked hard. I wanted to pass the test. (Tôi học hành chăm chỉ. Tôi muốn đỗ kỳ thi.)
=> I worked hard so as to pass the test. (Tôi học hành chăm chỉ để đỗ kỳ thi.)
Tình huống 2: I worked hard. I didn’t want to fail the test. (Tôi học hành chăm chỉ. Tôi không muốn trượt kỳ thi.)
=> I worked hard in order not to fail the test. (Tôi học hành chăm chỉ để không trượt kỳ thi.)

II Các sd in order và so as

So as + nguyên mẫu ám chỉ rằng chủ từ muốn hành động xảy ra. Do đó In order thông dụng hơn.

– In order và So as được dùng.

+ Với một nguyên mẫu phủ định để diễn đạt mục đích phủ định:

He left his gun outside in order/so as not to frighten us.

Anh ta để cây súng ở ngoài để không làm cho chúng tôi sợ.

+ Với to be và to have:

She left work early in order/so as to be at home when he arrived.

Cô rời sở sớm để có mặt tại nhà khi anh ấy đến.

She gave up work in order/so as to have more time with the children.

Cô ấy thôi việc để có nhiều thời giờ hơn cho lũ trẻ.

+ Khi mục đích ít tức thời hơn.

He is studying mathematics in order/so as to qualify for a better job.

Anh ta đang học toán để bồi dưỡng chuyên môn cho một việc làm tốt hơn.

She learnt typing in order to help her husband with his work.

Cô ấy học đánh máy để giúp việc cho chồng.

+ Đôi khi trong các câu dài hơn, để nhấn mạnh rằng nguyên mẫu trình bày mục đích.

He was accused of misrepresenting the facts in order/so as to make the scheme seem feasible.

Anh ta bị kết tội đã trình bày sai sự thật giúp kế hoạch khả thi.

* Lưu ý: Nhưng in order/so as không cần thiết lắm và thường bị lược.

+ Khi nguyên mẫu chỉ mục đích đi trước động từ chính, In order/so as có thể được đặt ra đầu tiên.

In order/so as to show his boss what a careful worker he was, he took extra trouble over the figures.

Để cho ông chủ thấy anh ta là một công nhân cẩn thận cỡ nào, anh ta mõi ra thêm các sơ hở phụ qua các con số.

+ In order (chứ không có So as) được dùng để nhấn mạnh rằng chủ từ đã có sẵn mục đích trong đầu

He bought diamonds when he was in Amsterdam – That wasn’t surprising. He went to Amsterdam in order to buy diamonds.

Anh ta mua kim cương khi anh ta ở Amsterdam đấy. – Điều đó không đáng ngạc nhiên. Anh ấy đếm Amsterdam để mua kim cương đó mà.

+ Tuy nhiên ta cũng có thể diễn đạt ý này bằng cách nhấn ở động từ thứ nhất và lược bỏ in order.

He went to Amsterdam to buy diamonds.

Anh ấy đi Amsterdam để mua kim cương.

* Nguyên mẫu + danh từ + giới từ

I want a case to keep my records in.

Tôi muốn có một cái va li để đựng giấy tờ.

I need a corkscrew to open this bottle with.

Tôi cần một cái mở nút để về mở cái chai này.

* Lưu ý: ta đang nói về mục đích cụ thể. Đối với một mục đích tổng quát ta dùng for + danh động từ.

This is a case for keeping records in.

Đây là cái cặp để đựng giấy tờ.

A corkscrew is a tool for opening bottles.

Cái mở nút là một dụng cụ để mở nút chai.

Đầy đủ

2. Khi mục đích hành động hướng tới đối tượng khác

S + V + in order + for O + (not) + to + V ….

Tình huống: She works hard. She wants her kid to have a better life. (Cô ấy làm việc chăm chỉ. Cô ấy muốn con mình có cuộc sống tốt hơn.)
=> She works hard in order for her kid to have a better life. (Cô ấy làm việc chăm chỉ để con cô ấy có cuộc sống tốt hơn.)

11. They blamed ..........for the accident.

12. “Let it be” is a famous song ……………. . It is one of the best works by this band.

13. People go to a …………….. to look at the famous works of art.

14. Hoa is reading short stories …………. Jack London.

15. I don’t think that purple shirt..........with your yellow shirt.

16. It was very………of him to break that race.

17. It is very……..to sit in the class for two hours a day in summer.

18. “Would you like to go to a dance tonight?”- “ I’m sorry I can’t. I ………….my exercises this evening.

19. - “May I go out for just a while?” - “………………………”

20. My father gets used ..................... up late.

21. Do you know when .............. ?

22. People in Asia often drink.................

23. Since I moved house, I haven’t had much ………………… with those friends.

24. This town is not an interesting place to visit, so …………. tourists come here

25. Is there .......................... for every one?

Chúc b học tốt

If someone asks me what I want to do in the future, I will answer immediately that my dream is becoming an architect.

The first reason is that I want to build houses for families and bring a comfortable and warm feeling to them. In the houses will be designed by me, the couples can enjoy the romantic and quiet atmosphere, the children can play game and especially they can all feel safe. Every day, they can cook and have delicious meals together at the lovely kitchens. In the evening as well as in the weekend, they can gather together and talk to each other in the warm living rooms. Moreover, when they are stressed, they can relax in the clean bathrooms and then have sweet dreams in the cozy bedrooms. Those houses will certainly be perfect.

Besides, I want to contribute to make my country more beautiful and modern. I will join big projects such as designing buildings, hotels, bridges, roads, etc. I believe that I, of course with the help of my colleagues, will succeed and bring a new face to my country. Especially, I want to build a structure which is to be known by everyone. I think the structure will be a park with a lot of trees and flowers. It will be very large with fresh air for people to relax, play sports or go for a walk. It will also be an ideal place for brides and bridegrooms to come and take photos for their weddings. I hope someday I can realize that.

The third reason, which is also the most special reason, is that I want to design an excellent house for my family. It will have a modern and convenient kitchen because my mother loves cooking very much. In addition, it will have a big garden for my father to plant many kinds of trees and vegetables. We will also grow a lot of flowers in the garden for my younger sister and me. I can imagine how my family will live in this house. What a wonderful life!

I know becoming an architect is very difficult, but I love the job. Thus, I will try my best to realize my dream: contribute to beautify life.

Thấy hay = 1 tick

bài 1:change into reported speech

1, " I'm living with myparents now" she said.

she said she was living with her parents then.

2, "we are waiting for you

=>They told me that they were waiting for me.

3,John said to his mother "I don't know how to do this exercise"

John told his mother that he didn't know how to do the exercise.

4,"Do you enjoy reading books " Phong asked Lan

Phong asked Lan if she enjoyed reading books.

5, "Are there some oranges in the fridge?" She asked he mom

She asked her mom if there were some oranges in the fridge.

6, "did you go to Hue three years ago?" Tam asked Peter

Tam asked Peter if he went to Hue 3 years ago.

7, "where does your father work?" he asked me

he asked me where my father worked.

8,"what's your hobby?" my teacher said to Lien

my teacher asked Lien what was her hobby.

9,"how many books do the student need?"my teacher asked

my teacher asked me how many books the students needed.

10,"how long will you stay England?" Lan asked Hung

Lan asked Hung how long he would stay England.

11, she told me "Take it and come with me"

she told me to take it and come with her.

12,My sister said to Lan "bring me a book"

My sister asked Lan to bring her a book.

Thấy hay, đúng = 1 tick nha

I 61. most 62. It 63. of 64. lakes 65. is 66. from 67. go 68. Others 69. visitors 70. many

I ,Find in each numbered space with one appropriate word.

One of the(1).most.. beautiful part of Britain is the Lake District.The Lake District is situated in the north-west of England. (2).....It.... consists of high hills, mountains and, (3) ...of.... course,lakes .There are sixteen (4) ...lakes..... in all.Thhe largest one (5)...is..... Lake Windermere .

Every year more than fourteen million people (6) ....from...... Britain and abroad visit the Lake District.They (7) .......... there to enjoy the fresh air and the scenery . Some go to walk in the mountains. (8) ....Others...... sail boats ont the lakes or simply sit admiring the magnificent views.Unfortunately , the region is becoming the victim of its own success in attracting (9) ...visitors...... .

There are also (10)....many....... people coming to the Lake District . They threaten to destroy the peace and quiet which many are searching for there.

Chúc b học tốt

Thấy đúng, hay = 1 tick

Vietnam is a country that has thousands of years of history. Like many other countries in the world, Vietnam has a culture of its own identity that carries the most typical is the Lunar New Year. It is these features that make manners, shape and identity of the people in Vietnam.

Lunar New Year is the most important occasion in Vietnam. Lunar New Year, according to the Vietnamese called Tet Nguyen Dan. "Nguyen" is to start, "Dan" is a new day. "Tet Nguyen Dan" is to start a new year, to welcome Spring with everything in its newest appearance. A new year comes with goodluck and in the mean time, all of the badluck will be gone, together with the passed year. "Tet Ta" (Lunar new year) is affected by Chinese Lunar New Year and East Asia Traditional Circle so that "Tet Ta" comes after New Years Eve. According to the old rule: 3 even years/a month of the Lunar Calendar, so the first day of the year is never before Jan 21st or after Feb 19th. Normally, this day will come from about the end of Jan to mid of Feb. The Lunar New Year lasts for 7-8 days of the passed year and 7 days of the new year.

According to East Asian culture and history of China, the origin of Lunar New Year from Three Sovereigns and Five Emperors and change from time to time. According to folk beliefs, the New Year started from the concept "Thankfully the rain to sunshine", as well as originating from "tiet" (weather) upon under the operation of the universe, expressed in the cycle times the Spring - Summer - Fall - Winter, which, with a very special meaning for an agricultural country like Vietnam. Farmers for this is the occasion to commemorate the gods are related to agricultural land as the god of rain, thunder god, the god of water ... Farmers do not forget to thank the animals which help them farm work like cattle, poultry and they also thank others food crops, food to feed them.

The Vietnamese concept that everything in Lunar New Year must be very new and soon. So before Tet more than 2 weeks, the family prepare to celebrate. They are usually cleaning, decorating their house with apricot blossom, peach blossom, kumquat, couplets or festival painting. Preparation-work for the day of the Vietnamese New Year usually starts from December 23, the day that the Vietnamese dedicate Kitchen God. Some rural families still keep the tradition planting named “Neu”, while in the city, this custom has been forgotten. According to tradition, the tree is raised up against the devil and the ominous. the tree is often referred to hang or decorate what is considered to scare the devil as: garlic, cactus, effigies and Pandan. Before Tet, the Vietnamese also prepare chung cakes , day cake and hearty dishes to dedicate to their ancestors.

New Year's Day may be the 30th December (for full year) or December 29 (for shortage year). This day family reunion dinner together for the New Year. Between the 30th (or 29th) of December and 1 January, is the most important moment of the festival.It marked the transfer of the old year and new year, called Eve (Giao Thua). In recognition of this moment, people often make two trays. A tray of worship to ancestors at the altar in his house and a tray of worship Heaven and Earth in the front yard. Arrangements the altar of Vietnamese families usually have an altar ancestors, grandparents.The decoration and altar arrangements vary according to each house. However, on the altar every home always display two cane on either side as to the instrument for carrying on with the grandchildren and leading spirits from the sky on the lower boundary. At the same time on the altar also has a tray of five fruits expressed desire of the owner by the name, colours and their arrangement.

In addition, during public holidays are also customary forth. Many people view A day "opened" a new year. They said that on this day, if all goes smoothly, good luck for the whole year, would also be good, convenient. Right after the countdown time, anyone who steps outside into the home with new year wishes are considered to have stormed the land for their home. Moreover, referring to the lunar new year, people cannot help mentioning the continuing exodus, picking fortune, burn votive, congratulated, visiting, receiving lucky money, etc. All this rules are expressed wishes of the people of a prosperous new year, families are healthy, well off, warmth.

And indispensable in the New Year is the traditional dish. First to mention are chung cake, day cake associated with the legend of the same name. The legend tells that King Hung Vuong sixth looking for some twenty sons, one who truly virtuous to the throne should have the conditions: not necessarily the eldest son, who gratify the first king ceremony will be hereditary. The prince racing festival truly post-shopping, delicious. Lang Lieu, the son of the eighteenth, very sad for the poor, only grown accustomed to potatoes, rice, do not know where to get the ceremony delicacies like the other prince. After a night's dream, a hint gods, he took his sticky rice, green beans and pork buns in two things, the type of round, square type for father. King find delicious cakes, again express profound meaning he should take two bread ceremony Heaven, Earth and First King ceremonies, naming round cake is day cake, square cake is chung cake and throne to Lang Lieu. Since then, the chung cakes, day cakes worship ancestors become indispensable traditions of Vietnam's Tet.

Phong tục tập quán ngày tết của Việt Nam

The legend of chưng cake symbolizes conception of the universe of ancient Vietnamese people, while emphasizing the importance of rice and natural rice culture. The legend above want to remind children about the tradition of filial piety, respects; explanation of the meaning and origins of the Earth Cake. This is the beauty of the traditional culture of the nation.

One of the traditional dishes of ethnic is jam. The jam trays is not only delicious by the appearance but also carry different meanings. Whether it's somewhere in the world, the familiar images such as twigs yellow apricot, green chung cakes, red couplets, jam tray Festival, ... every time be mentioned that the Vietnamese to think of the New Year in hometown . Probably just about every spring, the Festival jam tray becomes sweet, meaningful. At Tet, almost every family put on their table all kinds of candies, jams Festival. First is to inviting guests , then the whole family to gather together and enjoy. Many kind of jam are put on the same tray is meant desired harmony, reunion.

For every country, in every period of history, culture, national traditions and language is the foundation of the social spirit, the motivation and goals of development, soul, strength life of the nation, that nation. Therefore, the preservation and promotion of cultural identity, national traditions play a very important role in the construction and development of the country. Through the customary of New Year's Day, the more we love hometown, country, Vietnamese people, saying to myself will try to study and train hard to preserve, promote and introduce the definition nice to her friends in the world.

II. There are six mistakes in the passage. Find and correct them

Everyone know that in studying foreign languages, practice is the key in fluency. All foreign language learners even the advanced one need practice. There is fact that a learner can know a lot of grammar rules and vocabulary, however, they can't speaking well yet. So the learners must know how use what they have learned apart from the ability to explain grammar rules.

Know => Knows

Fact => A fact

Speaking => Speak

Use => To use

Mk chỉ tìm thấy 5 lỗi thôi bn nhé.

- Lí do mà từ 'to' mk đã in nghiêng không thể thay thế được là 'of' như bn An Trần nói vì:

+) Nếu mà dùng 'of' như bạn An là đúng thì động từ sau nó phải theo dang ' V-ing'

+) Lí do mk nói như vậy vì :