备战职称英语考试:重点语法解析(8)-查字典英语网
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备战职称英语考试:重点语法解析(8)

发布时间:2016-03-01  编辑:查字典英语网小编

  Make a mark wherever you have any questions.

  We will go where the Party directs us.

  目的状语从句:that, so that, in order that

  注意:目的状语从句的谓语动词常与情态动词连用,否则可能是结果状语从句.不可置于句首.

  结果状语从句:that, so that, so that, such that

  注意:so + 形容词/副词 + that从句;such + 名词 + that从句.

  方式状语从句:as, as if

  Ill do as I am told to.

  It looks as if it is going to rain.

  比较状语从句:than, as

  条件状语从句:if, unless, so long as, in case, once, a far as, on condition that.

  注意if与unless的区别:不能用and连接两个unless从句,即不能有 unless ,and unless .

  但if not and if not却不受此限.

  You wont lose your weight unless you eat less and unless you exercise more.

  但可以说 unless you eat less and exercise more.

  注意状语从句中从句的省略现象

  连接词 + 过去分词

  Dont speak until spoken to.

  Pressure can be incrased when needed.

  Unless repaired, the washing machine is no use.

  连词 + 现在分词

  Look out while crossing the street.

  连词 + 形容词/其他

  常见的有it necessary、if possible、when necessary、if any等.

  

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