英语语法问题1.The choice as to which fact to use is based on a the

6个回答

  • 1.英语中用动词不定式的主动形式表示被动的有好多.

    其中之一,不定式做后置定语的:

    I have some clothes to wash.

    The old lady had four more letters to write.

    I'm hungry,please get me something to eat.

    之二,与特殊疑问代词连用,相当于名词性从句

    I don't know what to do next.

    He couldn't make up his mind which to buy,because there so many MP3 here.

    之三,一种句式转化而来的.

    It is difficult to learn English well.转化为:English is difficult to learn well.(后面这句也是主动表被动,并且好多句子都可以这样转化的)

    之四,固定搭配,比如blame这个词,都是用主动式表示被动的.

    It's the dirty water that is to blame!(脏水就是罪魁祸首)

    2.完成时态后面多用for,前提是for 加时段,而不是时点.这里的many tome是次数,不是时间段,所以不用for.在表示次数的时候,只有表示第一次时,才见for the first time,一般在次数前面不加介词.并且,没有特殊提示的时候,表示到什么什么时间总共多少多少次,一般都用现在完成时.

    这里一定要搞清楚的是“时段”还是“时点”.楼上所举的例子,last year,last week,不在这个范畴,那是另外的语法项目,相关的说明是这样的,“在指示代词或序数词后面加表时间的名词,此时,不允许在前面加任何介词”.