英语怎样变句型一般疑问句否定句反问句肯定句画线提问

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在英语句子中,由连系动词am、is、are构成的句子,在变一般疑问句时,只需将am、is、are提到句首,句尾加上问号即可。变否定句时,直接在am、is、are后面加not。例如:

肯定句:He is a student.

一般疑问句:Is he a student?

否定句:He is not a student.

此外,这样的句子还可以构成反问句,形式为“肯定句+否定反问”或“否定句+肯定反问”。例如:

反问句:He is a student, isn't he? 或 He isn't a student, is he?

在进行画线提问时,根据所画线部分选择合适的疑问词。例如,对he提问用Who,对a student提问用What或What does he do。

对于由情态动词can、may、should等构成的句子,变一般疑问句时只需将情态动词提到句首,句尾加问号。变否定句时,在情态动词后加not。例如:

肯定句:She can swim.

一般疑问句:Can she swim?

否定句:She cannot swim.

同样,这类句子也可以构成反问句。例如:

反问句:She can swim, can't she? 或 She cannot swim, can she?

画线提问时,对she提问用Who,对swim提问用What。

对于由行为动词构成的句子,需要加助词do或does进行变化。变一般疑问句时,将do/does放在句子前面。例如:

肯定句:They play football after school.

一般疑问句:Do they play football after school?

否定句:They don't (do not) play football after school.

反问句:They play football after school, don't they? 或 They don't play football after school, do they?

画线提问时,对they提问用Who,对play football提问用What do they do,对after school提问用When。

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