作业帮do 的用法
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do 的用法
do 的用法
do 的用法
do 最普通常用词,指完成某项具体工作、任务,也指完成某种行为或动作
一.aux v 助动词
1.用于实动词之前以构成否定句及疑问句 eg: I don't like fish. ;
用以构成附加问句 eg：You live in London, don't you?
2.用于句中无其他助动词时, 以加强动词的肯定语气 eg: He `does look tired.
3.当副词或副词词组移置到句首时, 用以改变主语和动词的语序): Not only does she speak Spanish, (but) she also knows how to type.
4.用以代替实动词, 避免重复 eg: He drives faster than he did a year ago.
二.v 动词
eg:do the dishes
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