MỌI NGƯỜI LÀM GIÚP MÌNH ĐI Ạ, MÌNH SẼ TÍCH ĐÚNG CHO. CẢM ƠN RẤT NHIỀU!

Rewrite each of the following sentences, using the word in the capital

1- If you do have any free time, could you give me a ring? SHOULD

2- We won’t go away if the weather is bad. UNLESS

3- I didn’t have the money, so I didn’t buy a new suit. WOULD

4- If you hurry up, you won’t be late. GOING

5- If they offered you the job, would you accept? WERE

6- If you are in London by any chance, come and see me. HAPPEN

7- Without you, I would have given up years ago. BEEN

8- Please take a seat, and I’ll inquire for you. WILL

9- Don’t take this job if you don’t really want it. UNLESS

10- I wasn’t tall enough to reach the shelf. TALLER

11- If the ship sank, what would you do? WERE

12- If you should notice what’s on at the cinema, let me know. HAPPEN

13- If you hadn’t encouraged me, I would have given up. BUT

14- I don’t have any money, so I can’t lend you any. IF

15- But for Helen, the play would be a flop. WERE

MỌI NGƯỜI LÀM ĐI NÀO MÌNH SẼ TÍCH ĐÚNG CHO NHÉ. CẢM ƠN RẤT NHIỀU!

Choose the most suitable tense

1- I can’t understand what he sees in her! If anyone treats / will treat / treated me like that, I am / will be / would be extremely angry.

2- If you help / helped me with this exercise, I will do / would do the same for you one day.

3- According to the timetable, if the train leaves / left on time, we will / would arrive at 5.30.

4- If it is / will be fine tomorrow, we go / will go to the coast.

5- If we find / found a taxi, we will get / would get there before the play starts.

6- It’s quite simple really. If you take / will take / took these tablets every day, then you lose / will lose / lost / would lose weight.

7- I don’t like this flat. I think I will be / I am / I’d be happier if I lived / live / will live / would live in a house in the country.

8- I can’t play football, but I’m sure that if I will do / do / did, I play / will play / would play a lot better than anyone in this awful team.

9- I phone / will phone / phone you tonight, are you / will you be / would you be in?

10- Why didn’t you tell me? – If you told / had told me, I had / would have helped you.

11- If Bill didn’t stea l/ hadn’t stolen the car, he weren’t / wouldn’t be / hadn’t been in prison now.

12- If Ann weren’t driving / didn’t drive / hadn’t driven so fast, her car didn’t crash / wouldn’t crash / wouldn’t have crashed into a tree.

13- Let me give some advice. If you smoked / would smoke / had smoked less, you didn’t feel / wouldn’t feel / wouldn’t have felt tired.

14- What bad luck! If Alan didn’t fall / hadn’t fallen / wouldn’t fall over, he won / would win / would have won the race.

15- If you invited/had invited me last week, I was able/had been able/would have been able to come.

16- I’m sure your letter hasn’t arrived yet. If it came/had come, I’m sure I noticed/hadnoticed/would have noticed it.

17- We have a suggestion to make. How do you feel/would you feel if we offered/would offer/had offered you the job of assistant manager.

18- If you lent/had lent us the money, we paid/would pay/had paid you back next week.

19- I wish Peter doesn’t live/didn’t live/wouldn’t live so far away from the town center. We’ll have to take a taxi.

20- I feel rather cold. I wish I brought/had brought my pullover with me.

21- I wish you tell/had told/told me about the test. I haven’t done my revision.

22- I’m sorry I missed your birthday party. I really wish I come/came/had come/wouldcome.

23- I like my new boss but I wish she gave/would give/could give me some more responsibility.

24- Having a lovely time in Brighton, I wish you are/were/had been here. Love, Mary.

25- A cheque is all right, but I’d rather you pay/paid me cash.

26- If only I have/had/would have a screwdriver with me.

27- If you want to catch the last train, it’s time you leave/left

28- I’d rather you don’t tell/didn’t tell anyone about our conversation.

29- It’s high time you learn/learned to look after yourself.

30- Jean thinks that everyone likes her. If only she knows/knew what people say behind her back.

Tính đạo hàm:

1. \(\lim\limits_{x\rightarrow3^+}\sqrt{x^2-9}.\dfrac{2x+1}{x-3}\)

2. \(\lim\limits_{x\rightarrow2^-}\left(x^3-8\right)\sqrt{\dfrac{x}{2-x^2}}\)

Tính đạo hàm:

\(y=-\dfrac{cosx}{3sin^2x}+\dfrac{4}{3}cotx\)

Cho hình chóp S.ABCD có đáy ABCD là hình vuông cạnh a, SA vuông góc với mặt phẳng (ABCD). \(SA=a\sqrt{2}\), K là trung điểm của SC.

a. Xác định giao tuyến của 2 mặt phẳng (SAD) và (SBC).

b. Dựng thiết diện AMKN cắt bởi mặt phẳng (P) song song với BD? (\(M\in SB;N\in SD\)). Tính diện tích thiết diện theo a.

c. G là trọng tâm tam giác ADC. CM: NG song song với mặt phẳng (SAB).

d. Tìm giao điểm của NG với mặt phẳng (SAK).

Tính đạo hàm:

\(y=\left(x+1\right)\left(x+2\right)^2\left(x+3\right)^3\)

Tìm giới hạn của hàm số sau:

\(\lim\limits_{x\rightarrow1^+}\left(x-1\right)\sqrt{\dfrac{2x+3}{x^2-1}}\)

TÍNH GIỚI HẠN CỦA HÀM SỐ SAU:

\(\lim\limits\frac{\sqrt[2017]{2x-1}-x^{2017}}{x-1}_{x\rightarrow1}\)

\(=\lim\limits_{x\rightarrow+\infty}\frac{\left(\sqrt{x+\sqrt{x+\sqrt{x}}}-\sqrt{x}\right)\left(\sqrt{x+\sqrt{x+\sqrt{x}}}+\sqrt{x}\right)}{\left(\sqrt{x+\sqrt{x+\sqrt{x}}+\sqrt{x}}\right)}\)=\(\lim\limits_{x\rightarrow+\infty}\frac{x+\sqrt{x+\sqrt{x}}-x}{\sqrt{x+\sqrt{x+\sqrt{x}}}+\sqrt{x}}=\lim\limits\frac{\sqrt{x+\sqrt{x}}}{\sqrt{x+\sqrt{x+\sqrt{x}}}+\sqrt{x}}\)

=\(\lim\limits\frac{\sqrt{1+\frac{1}{\sqrt{x}}}}{\sqrt{1+\sqrt{\frac{1}{\sqrt{x}}+\frac{1}{x\sqrt{x}}}}+1}\)

Tính giới hạn:

\(\lim\limits_{x\rightarrow\infty}\left(\sqrt[3]{x^2+1}-\sqrt[3]{2x+1}\right)\)