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几个英语语法问题-----,he is very good at playing table tennis.A.as h

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几个英语语法问题
-----,he is very good at playing table tennis.
A.as he is a small boy
B.A small boy he is
C.A small boy as he is
D.Small boy as he is
答案D(为什么不能用C...C跟D就相差了个不定冠词么)
She -----her parents about her cheating in the English final examination.
A.dares not tell
B.dares not to tell
C.don't dares to tell
D.dare not tell
答案D (为什么不能选其他的...dare做动词应该有第3人称加s的啊)
-----out of season,I would have ordered some from the fruit stand.
A.If oranges would have been
B.If oranges have not been
C.Had oranges not been
D.Should oranges not have been
答案C (为什么不选其他答案...比如A.B)
_will another fifty be enough?
_I---a better position at IBM.
A.work B.do C.suit D.fit
答案B (为什么不选C.D)
说明要详细...把错误的答案都要讲一下...谢谢
1, 3, 都是倒装句!他们是为了修饰后面句子,而不是独立的,要省略一些句子成分,如果要独立出来,他的时态必须和后面的保持一致!第一题的选项是用来修饰主语he的,第3题的B.If oranges have not been ,把have改成had也就ok了!这个是时态没对!
第二题:dare此处系情态动词,情态动词是没有时态变化的,dare用在否定句中一般做情态动词,此处把C.don't dares to tell 变成doesn't dare to tell 就对了,因为dare在这里就成了实义动词了!
第四题,问句好像有问题,不太通。但是fit表示你很适合某个具体的职位,比如:He will just fit for the post!需要用定冠词修饰。suit的用法是:The job suit me!这工作很适合我!这句话的意思是我在IBM做一份很好的差事,但具体做什么,别人不知道,所以用不定冠词a!答案是do!
多看书,阅读,不要死记单词,你见的多了,这些选择题你不用问为什么,一眼就知道选哪个了!我平常都不看语法书的,说的不是很清楚,很专业的话,你就再去看看一些语法书吧!