句子的种类
1.英语中按使用目的或功用分为四类:陈述句、疑问句、祈使句、感叹句。
A.陈述句。
○1 陈述句说明一个事实或陈述一个人的看法。陈述句分为肯定陈述句和否定陈述句两种。
a.陈述句的肯定式。I have already posted the photos. / They are students. / I must go now . / He was reading a book at 8:00 last night.
b.陈述句的否定形式。
谓语动词是系动词be, 助动词have, will, shall, be或情态动词,只须在其后面加not构成否定句。
She isnt a student . / He hasnt been to the Great Wall . / I can not swim . / You will not go there tomorrow. / They arent sleeping .
若谓语动词是实义动词,在实义动词前加上do not,第三人称单数现在时用does not,过去时用did not。
He didnt send me an invitation .
由具有否定含义的词never, nobody, hardly, little, dislike, seldom, few, tooto等构成的否定句。
Not all the books in our school library can be renewed .
B. 疑问句。
○1 疑问句提出问题。英语中有四种疑问句:一般疑问句、特殊疑问句、选择疑问句和反意疑问句。
a.一般疑问句:以一个助动词、情态动词、动词be或have开始,语调为升调,通常要求以yes或no回答的疑问句。
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