今晚补充作业：
句型转换：A. 改为一般疑问句并作否定回答； B.改为否定句。
1.He could sing some English songs.
2.She sang some songs at the party.
3.The young man danced to disco very well.
4.He performed some magic tricks.
5.Maria played the piano yesterday.
6.My friends made a model plane for me.
7.His friends made some birthday cards by hand for him.
8.Her parents bought some toys for her last Sunday.
1，Could he sing any english songs？No,he could not.
He couldn’t sing any english songs.
2,Did she sing any songs at the party？No,she didn't.
She didn't sing any songs at the party.
后面都一样，变成疑问句的话，过去式前面加did,动词变成原形，有some的变成any,没有情态动词的回答统一是No,sb. didn't.否定句是动词前面加did,动词变原形，some变any.
He couldn’t sing any english songs.
2,Did she sing any songs at the party？No,she didn't.
She didn't sing any songs at the party.
后面都一样，变成疑问句的话，过去式前面加did,动词变成原形，有some的变成any,没有情态动词的回答统一是No,sb. didn't.否定句是动词前面加did,动词变原形，some变any.
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