1.He left home after his dad came back from work.(用until改写)
2.I was cooking the dinner.He was playing the piano.(用while把两句连接起来)
3.playing,was,the,boy,he,a stranger,saw,get out of,when,a car(连词成句)
4.We were having a birthday party when the phone rang.（对划线部分提问）
划线部分是：were having a birthday party
5.There were some pictures and dialogues in the book.（用no改为否定句）
1.He didn't leave home until his dad came back from work.
2.I was cooking the dinner while he was playing the piano.
3.The boy was playing when he saw a stranger get out of a car.
4. What were you doing when the phone rang?
5.There were no pictures or dialogues in the book.
1.He didn't leave home until his dad came back from work.
2.i was cooking the dinner while he was playing the piano.
3.The boy saw a stranger get out of a car when he was playing.
4.what are you doing when the phone rang?
5.there were no any pictures and dialogues in the book.
1. He didn't leave home until his dad came back from work
2. I was cooking the dinner while he was playing the piano
3. When the boy was playing he saw a stranger get out of a car
4. What were you doing when the phone rang?
5. There were no pictures and dialougues in the book.