2010年職稱英語考試:重點語法精講(8)

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Make a mark wherever you have any questions.
    We will go where the Party directs us.
    5、目的狀語從句:that, so that, in order that
    注意:目的狀語從句的謂語動詞常與情態(tài)動詞連用,否則可能是結(jié)果狀語從句.不可置于句首.
    6、結(jié)果狀語從句:that, so that, so … that, such … that …
    注意:so + 形容詞/副詞 + that從句;such + 名詞 + that從句.
    7、方式狀語從句:as, as if(though)
    I'll do as I am told to.
    It looks as if it is going to rain.
    8、比較狀語從句:than, as
    9、條件狀語從句:if, unless, so (as) long as, in case, once, a far as, on condition that.
    注意if與unless的區(qū)別:不能用and連接兩個unless從句,即不能有… unless …,and unless … .
    但if … not and if … not卻不受此限.
    You won't lose your weight unless you eat less and unless you exercise more.(×)
    但可以說 … unless you eat less and exercise more.
    10、注意狀語從句中從句的省略現(xiàn)象
    (1)連接詞 + 過去分詞
    Don't speak until spoken to.
    Pressure can be incrased when needed.
    Unless repaired, the washing machine is no use.
    (2)連詞 + 現(xiàn)在分詞
    Look out while crossing the street.
    (3)連詞 + 形容詞/其他
    常見的有it necessary、if possible、when necessary、if any等.