4、地點狀語從句:where, wherever

　　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.