第1个回答 2019-11-22
例题答案：1.肯定句：We have a P.E lesson on Tuesday.2.否定句：We don't have a P.E lesson on Tuesday.3.特殊疑问句：Which lesson do we have on Tuesday?一.don't/dosen't/didn't都是助动词do的否定形式don't 用在主语为I,you,we,they以及复数名词的时候.doesn't 用在主语为he,she,it以及单数名词的时候.didn't 用在过去式的句子中.二.do/does/did是助动词的肯定形式do用在主语为I,you,we,they以及复数名词的时候.does用在主语为he,she,it以及单数名词的时候.