为大家整理了初中的众多知识点归纳、考点总结、以及复习资料,供各位学生和家长参考。希望大家能从中得到收获,下面是卓越教育老师为大家整理了相关资料,以供参考.
助动词(do, does )的用法
只有实意动词作谓语时才涉及使用助动词。以like为例:
1)当句子为肯定句时不涉及使用助动词,只涉及"主谓一致"原则。
eg : I like English a lot.
Michael likes Chinese food very much.
2)当句子为否定句时,要根据主语的人称来决定使用相应的助动词:当主语为"三单"时,要使用does;当主语为"非三单"时,用助动词原形do。例如把下列句子变否定句:
Kangkang likes math.----Kangkang doesn't like math.
They like sports.------They don't like sports.
3)当句子变疑问句时,同样要根据句子的主语来决定在句首使用Do或Does.例如下列句子变问句:
Michael likes Chinese Food.----Does Michael like Chinese food? Yes, he does./ No, he doesn't.
Jane and Helen like music.----Do Jand and Helen like music? Yes, they do./ No, they don't.
