从属连词的用法
⑴ 引导时间状语从句的从属连词
① 表示“当…时候”或“每当”的时间连词。主要的 when, while, as, whenever。
例如: Don’t talk while you’re eating.
吃饭时不要说话。
② 表示“在…之前(或之后)”的时间连词。主要的有before, after。
例如:Try to finish your work before you leave.
离开前设法把工作做完。
③ 表示“自从”或“直到”的时间连词。主要的有since, until, till。
例如:She’s been playing tennis since she was eight.
她从八岁起就打网球了。
④ 表示“一…就”的时间连词。主要的有as soon as, the moment, the minute, the second, the instant, immediately, directly, instantly, once, no sooner…than, hardly…when等。
例如:I’ll let you know as soon as I hear from her.
我一接她的信就通知你。。
⑵. 引导条件状语从句的从属连词。这类连词主要有if, unless, as [so] long as, in case 等。
例如:Do you mind if I open the window?
我开窗你不介意吧?
注:as long as的双重用法。
⑴ 作形容词的原级比较
例如:This river is as long as that one.
这条河和那条河一样长。
⑵ 作从属连词表示“只要…”
例如:As long as you work hard, you will have chance to be promoted.
只要你努力工作你就有机会得到提拔。
注: 区别两种用法:
① 看句子的语义;
② as long as作从属连词时通常放在句首。
⑶ 引导目的状语从句的从属连词。主要的有 in order that, so that, in case, for fear等。
例如:Take your umbrella (just) in case it rains.
带上雨伞,以防下雨。
⑷ 引导结果状语从句的从属连词。主要的有so that, so…that, such…that等。
例如:I went to the lecture early so that I got a good seat.
我去听演讲去得很早, 所以找个好座位。
⑸ 引导原因状语从句的从属连词。主要的有because, as, since, seeing (that), now (that), considering (that) 等。
例如:He distrusted me because I was new.
他不信任我,因为我是新来的。
⑹ 引导让步状语从句的从属连词。主要的有although, though, even though, even if, while, however, whatever, whoever, whenever, wherever等。
例如:Whenever I see him I speak to him.
每当我见到他,我都和他讲话。
⑺ 引导方式状语从句的从属连词。主要的有as, as if, as though, the way等。
例如:Why didn’t you catch the last bus as I told you to?
你怎么不听我的话赶乘末班公共汽车呢?
⑻ 引导地点状语从句的从属连词。主要的有where, wherever, everywhere, anywhere等。
例如:I’ll take you anywhere you like.
你想到哪儿我就带你到哪儿。
⑼ 引导比较状语从句的从属连词。主要的有than和as…as。
例如:He doesn’t work as hard as she does.
他工作不像她那样努力。