1. I cannot contact her as I don't have her phone number

--> If I had her phone number, I would contact her

2 The girl is playing with a dog in the garden. She is my close friends.( Use "relative classe )

--> The girl who is playing with a dog in the garden is my close friends.

3 What a pity I can't come to your party tonight.

--> I wish I could come to your party tonight

4. " Do you like reading books?"

-->Peter asked me if I liked reading books

5. "This picture is very nice,"

-->My uncle said that picture was very nice

6. "I am cleaning my room now"

--> Jane said she was cleaning her room then

7 I am not in Paris now

--> I wish I was in Paris now

8. you must wash this sweater in warm water

--> This sweater must be washed in warm water

1. If I had her phone number, I could contact her.

`->` If 2: If + S1 + V2/ed, S2 + would/could + Vinf

2. The girl who is my close friends is playing with a dog in the garden.

`->` "who" thay cho chủ ngữ chỉ người

3. I wish I could come to your party tonight.

`->` Câu mong ước nên lùi thì, chuyển phủ định sang khẳng định.

4. Peter asked me if I liked reading books.

`-`> Câu trần thuật yes, no: S + asked + O + if + S2 + V lùi thì

5. My uncle said that picture was very nice.

`->` Câu trần thuật nên lùi thì từ "is" thành "was"

6. Jane said that she was cleaning her room then.

`->` Câu trần thuật nên lùi thì từ hiện tại tiếp diễn về quá khứ tiếp diễn, chuyển "now" thành "then"

7. I wish I were in Paris then.

`->` Câu mong ước nên lùi thì, chuyển phủ định sang khẳng định.

8. This sweater must be washed in warm water.

`->` Câu bị động với "must" S + must be + Vpp