Cho S=1+3¹+3²+...+3³⁰

Tìm chữ số tận cùng của S

Tìm x thuộc N biết 2^x+3+2^x=144

Tìm số tự nhiên n biết:

a)3ⁿ=27

b)5ⁿ=625

c)12ⁿ=144

d)2ⁿx16=128

e)3ⁿ:9=27

f)(n-2)²=(n-2)⁴

g)n⁵=n²⁰¹⁸

Cho S=7+10+13+...+97+100

a/Tổng trên có bao nhiêu số hạng

b/Tính tổng S

c/Số hạng thứ 23 là số nào?Giải thích

Bài tập kết hợp thì hiện tại đơn và thì hiện tại tiếp diễn

1.Where ................you(live)..............?

I (live).....................in Hai Duong town.

2.What ...................she (do)........................?

He (water)..............flower in the garden.

3.What ......................she(do).....................?

She (be)..................a teacher.

4.Whe-re.......................you(be) f-rom?

5.At the moment,my sister(play)..............volleyball and my brother(play)...soccer.

6.It is 9.00,my family(watch).............TV.

7.In the summer,I usually(go).............to the park with my friend,and in the spring,we (have)................Tet Holiday;I(be)...............happy because I always(visit).............my granparents.

8...............your father(go)..............to work by bus?

9.How.....................your father (go).......................to school?

10.What time.............they (get up)......................?

11.What....................they(do)......................in the winter?

12.Today,we(have)...................English class.

13.Her favourite subject(be)...................English

14.Now ,my brother (like)..............eating bananas

15.Look!Aman(call)..........you

16.Keep silent!I(listen)..................to the radio

17.........................you(play)..........................badminton now?

18.Everyday,my father(get up).............at 5.00 a.m,but today,he (get up)..................at 6.00a.m

19.Every morning,I(watch).................TV at 10.00,but today I (listen)...........................to music at 10.00

20.Everyday,I (go).................to school by bike but today I go to school by motorbike

21.Every morning,my father(have).............a cup of coffebut today he(drink).........milk

22.At the monment,I(read)......................a book and my brother(watch)....................TV

23.Hoa(live)...........in Ha Noi ,and Ha (live)...............in HCM city

24.Hung and his friend(play)..................badminton

25.They usually(get up).............................at 6.00 in the morning

26.Ha never(go)...............fishing in the winter but she always(do)...............it in the summer

27.My teacher(tell)....................Hoa about Math

28.There(be)....................animals in te circus

29.......................he(watch)..................TV at 7.00every morning?

30.What.........................she (do).........................at 7.00 a.m

31.How old...............she(be)?

32.How ....................she(be)?

33.My children(go)...........................to school by bike

34.We (go).......................to supermarket to buy some food

35.Mr.Hien(go)......................on business to Ha Noi every month

36.Ha(like)........................coffee very much,but I(not like)...................it

37.She(like).......................Tea,but she (not like)...................coffee

38.I(love)................cats,but I(not love)............................dogs

39.Everyday,I (go).............to school on foot,but today I(go)................to school by bike

BÀI HƠI DÀI NHƯNG CÁC CỐ GẮNG GIẢI HỘ MK NHA CHÚC CÁC BẠN HỌC TỐT

Viết lại câu sử dụng thì hiện tại đơn và hiện tại tiếp diễn

1.My/father/water/some plants/he/garden

=>..........................................................................

2.My/mother/clean/floor

=>................................................................................

3.Mary/have/lunch/her/friend/a/restaurant

=>.........................................................

4.They/ask/a/man/about/the/way/the/rainway/station

=>................................................................

5.My/student/draw/a/beautiful/picture

=>..............................................................