10、注意狀語從句中從句的省略現象(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。
二、精典名題導解
選擇填空
1. I don’t think I’ll need any money but I’ll bring some ____________。
A.as last
B.in case
C.once again
D.in time
解析:答案為B.句意為“帶些錢以防萬一”,只能選擇in case.引導的條件狀語從句,后面省略了I should need it.
2. The WTO can’t live up to its name _________ it doesn’t include a country that is home to one fifth of man-kind.
A.as long as
B.while
C.if
D.even though
解析:答案為C.本題考查狀語從句的用法。句意為“假如世貿組織不包括占世界人口五分之一的中國的話,那它就名不副實”。as long as語氣過于強烈,while和even though不符合句意。
3、Someone called me up in the middle of the night, but they hung up_________I could answer the phone.
A.as
B.since
C.before
D.until
解析:答案為C.題意為:半夜里有人打來電話,我沒來得及就掛了。but暗示在接話前就掛了。