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2015山西省成人英语基础知识学习(十六)
2014-12-29 10:56:57   来源:   评论:0 点击:
  ②help后的不定式“to”可有可无,如:

  Would you please help me (to) look for my lost necklace?

  She helps me (to) learn to drive.

  (7)形容词补足语:用在表示心理、感情、评价等的形容词后,对其进行补充说明。如:

  We are very glad to meet you again. 2.不定式的时态和语态 不定式有时态和语态的变化, 如果不定式动作发生在谓语动作之后,用不定式的一般时来表示。

  如果不定式动作发生在谓语动作之前,用不定式的完成时。

  如果不定式动作与谓语动作同时发生,用不定式的进行时或一般时。

  例:I hope to see the film Titanic.(之后)

  They seemed to have heard about the news already.(之前)

  They are said to be playing football on the playground now.(同时)

  The book is said to have been translated into German.(之前)

  I’m sorry to have wasted your time.(之前)

  注意:不定式的逻辑主语(一般为句子主语)是不定式动作的承受者时,需用不定式的被动式。例:Tom doesn’t like to be praised in public.

  He asked to be sent to work there.

  Its an honour for him to have been invited to the party.

  不定式在easy difficult,hard,pleasant,heavy,expensive等形容词后作状语,用主动形式 表示被动意义。

  It is difficult to understand.

  The work is hard to do.

  The box is heavy to carry.

  若不定式与所修饰词有动宾关系,但与另一词有主谓关系,往往用主动式表示被动意义。 例:He has a meeting to attend.

  We still have many things to do.

  3,几点注意事项 (1)在“It is +形容词十for/of sb. to do sth.”结构中,如果形容词是用于说明事情的,介词用 for;如果形容词是用于说明人的,介词则选用of。说明人的形容词主要有:clever’careless,

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