1.where isJim?
——I found(him singing)in the next room.
(为什么用him不用he?)
2.Betty.it`s time for us(to go)home.
——let`s go.
(为什么用to go?)
3.did Marian see a movie or watch TV?
——(she saw a movie)
(为什么回答不能用yes 或no额..).
4.what about(going)fishing this Sunday?
——great.I`d like(to go)with you.
(为什么用going和to go)