* Ròng rọc cố định:

- đồ múc nước

- Cần cẩu

- Móc treo cờ

* Ròng rọc động

- Dây chuyền sản xuất

- cái móc hang trong nhà máy

kb nha

I. Nội qui tham gia "Giúp tôi giải toán"

1. Không đưa câu hỏi linh tinh lên diễn đàn, chỉ đưa các bài mà mình không giải được hoặc các câu hỏi hay lên diễn đàn;

2. Không trả lời linh tinh, không phù hợp với nội dung câu hỏi trên diễn đàn.

3. Không "Đúng" vào các câu trả lời linh tinh nhằm gian lận điểm hỏi đáp.

Các bạn vi phạm 3 điều trên sẽ bị giáo viên của Online Math trừ hết điểm hỏi đáp, có thể bị khóa tài khoản hoặc bị cấm vĩnh viễn không đăng nhập vào trang web

activity 1

1.b phiên âm iz những từ còn lại phiên âm s

2.d phiên âm id còn những từ còn lại phiên âm  d

Activity 2

1 did't try

2 received

còn câu 3

Use the following words to make complete sentences. You can make any necessary changes to the words, but DO NOT change their order.

1. He/ want/ be/ the/ fast/ and/ best/ driver/ of all.

He wants to be the fastest and the best driver of all

2. How/ long/ it/ take/ get/ school/ bike?

How long does it take you to get to school by bike ?

3. She/ wait/ him/ ten hours

She waited for him about ten hours

4. Yesterday/ he/ tell/ me/ buy/ him/ newspaper.

Yesterday , he told me to buy for him a newspaper

Make questions for the following sentences using the given question words

1 lan bought a new coat for her mother

what did Lan buy for her mother ?

2 liz told her friends about her visit to Tri Nguyen Aquarium.

what did Liz tell her friends ?

3. My family moved to Ha Noi two years ago

when did your family move to Ha Noi ?

4. Mai' s uncle cut hair yesterday.

who did cut hair yesterday ?

5. Linh didn't take her sister out because it rained.

why didn't Lan take her sister out ?

6. My new dress was green and white.

what color was your new dress ?

she returned to her hometown last July

when did she return to her hometown ?

8. I met him for the first time in Da Lat.

where did you meet him for the first time ?

1, WILL BE

2, WILL DRIVE

3, WILL WEAR

4, WILL DO

5, WILL GROW

6, WILL LIVE

7, WILL SPEAK

8, WILL WIN

9, WILL LISTEN

10, WILL GO

hỏi Mạo

1, doesn't have                                                                                                                                                                                                     2, don't go                                                                                                                                                                                                           3, do you start                                                                                                                                                                                                     4, watches

1. Doesn't have

2. Don't go

3. ... do you start ...

4. watches

1. does

2. watches

3. play

Học tốt ^ ^

1 . does , 2 . watches , 3  . to play 

1. What are her favorite sports?

2. What do you often do in your free time?

Học tốt ^ ^

bn có gạch chân đâu mà làm đc

1) This is the first time he went abroad.

=> He hasn't gone abroad before

2) She started driving 1 month ago.

=> She has drived for 1 month

3) We began eating when it started to rain.

=> We have eaten since it started to rain.

4) I last had my hair cut when I left her.

=> I haven't  had my hair cut since I left her.

5) The last time she kissed me was 5 months ago.

=> She hasn't  kissed me for 5 months 

6) It is a long time since we last met.

=> We haven't  met since a long time  .

7) When did you have it ?

=> How long have you had it ?

8) This is the first time I had such a delicious meal .

=> I haven't had such a delicious meal before

9) I haven't seen him for 8 days.

=> The last  I saw him was 8 days ago

10) I haven't taken a bath since Monday.

=> It is