2015年职称英语考试理工类语法精讲(3)

　　6、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.

　　7、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.

　　8、比较状语从句:than, as

　　9、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.

　　10、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.

　　二、精典名题导解

　　选择填空

　　1. I dont think Ill need any money but Ill bring some ____________.

　　A.as last B.in case C.once again D.in time

　　解析:答案为B.句意为带些钱以防万一,只能选择in case.引导的条件状语从句,后面省略了I should need it.

　　2. The WTO cant live up to its name _________ it doesnt 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:答案为C.本题考查状语从句的用法.句意为假如世贸组织不包括占世界人口五分之一的中国的话,那它就名不副实.as long as语气过于强烈,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:答案为C.题意为:半夜里有人打来电话,我没来得及就挂了.but暗示在接话前就挂了.