2020年军队职称英语考试《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(though)

　　I'll 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 (as) 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 won't 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

　　(1)连接词 + 过去分词

　　Don't speak until spoken to.

　　Pressure can be incrased when needed.

　　Unless repaired, the washing machine is no use.

　　(2)连词 + 现在分词

　　Look out while crossing the street.

　　(3)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 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 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.