回答 Are his shoes dirty? Is this swimsuit yours? Are your fre

回答 Are his shoes dirty?Yes,they are.或者否定回答No,they aren't.
Is this swimsuit yours?Yes,it is.或者No,it isn't.
Are your frends doing their homework? Yes,they are.或者No,they aren't.
Are your pencils better than hers?Yes,they are.或者No,they aren't.
Is her sister a nurse? Yes,she is.或者No,she isn't.
改为否定句 They washed car last night?They didn't wash car last night.
I play the violin every day. I don't play the violin every day.
Peter gets exercises every day.否定句 Peter doesn't get exercises every day.
They were at school yesterday. 否定句They weren't at school yesterday.
Tony watches TV every night.否定句Tony doesn't watch TV every night.
My sisty drank some milk last night.否定句 My sister didn't drink any milk last night.

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前5句，主语提前，be动词后加not，？改为．