句型
1、 肯定句:是指用肯定的语气来陈述的句子,如:i’m a student. she is a doctor. he works in a
hospital.
there are four fans in our classroom. he will eat lunch at 12:00. i watched tv yesterday
evening.
2、否定句:含有否定词或表示否定意义词的句子,如:i’m not a student. she is not (isn’t) a doctor.
he does not (doesn’t) work in a hospital. there are not (aren’t) four fans in our classroom.
he will not (won’t) eat lunch at 12:00. i did not (didn’t) watch tv yesterday evening.
☆注意☆ 小结:否定句主要是在肯定句的基础上加上了否定词 “not”。有动词be的句子则“not”加在be后面,可缩写
成“isn’t,aren’t”,但am not 一般都分开写。没有动词be的句子则要先在主要动词的前面加上一个助动词(do,does,
did),然后在它后面加上“not”,你也可以把它们缩写在一起如“don’t , doesn’t , didn’t )。这三个助动词要根据
人称和时态来选择,其中“does”只用于一般现在时主语是第三人称单数的情况,而“did”只用于一般过去时,不论主语是什
么人称和数,都用“did” 。
3、一般疑问句:是指询问事实的句子,此类句子必须用“yes”,或“no”来回答。
如:are you a student? yes, i am / no, i’m not.
is she a doctor? yes, she is. / no, she isn’t.
does he work in a hospital? yes, he does. / no, he doesn’t.
are there four fans in our classroom? yes, there are. / no, there aren’t.
are you going to buy a comic book tonight? yes, i am. / no, i am not. (yes, we are. / no, we aren’t.)
will he eat lunch at 12:00? yes, i will. / no, i will not(won’t).
are they swimming? yes, they are. / no, they aren’t.
did you watch tv yesterday evening? yes, i did. / no, i didn’t.
☆注意☆ 小结:一般疑问句是在肯定句的基础上,
①把动词be调到首位,其他照写,末尾标点符号变成问号即可。
②没有动词be的句子则要在句首加上一个助动词(do,does,did)再把紧跟在后面的动词变回原形,末尾标点符号变成问
号即可。
这三个助动词也要根据人称和时态来选择,其中“does”只用于一般现在时主语是第三人称单数的情况,而“did”只用于
一般过去时,不论主语是什么人称和数,都用“did” 。一般疑问句有个重要的原则就是问和答要一致,即问句里的第一个单
词(助动词)和简略答句里的这个词是一致的。
4、特殊疑问句:以特殊疑问词(what , where , who , which , when , whose , why , how等)开头引导的句子。此类
句子应该问什么就答什么,不能用“yes 、no”来回答。如:
what is this? it’s a computer.
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