由從句擔(dān)任的狀語(yǔ)，在句子中可修飾謂語(yǔ)（或其它動(dòng)詞）、形容詞、副詞或是整個(gè)句子，它可以用來表示時(shí)間、地點(diǎn)、原因、目的、結(jié)果、條件、方式、比較、讓步等。狀語(yǔ)從句是一較大的語(yǔ)法項(xiàng)目，也是近幾年高考題中常見的一個(gè)重要試點(diǎn)。高考中已考查了時(shí)間、讓步、地點(diǎn)、條件、目的等狀語(yǔ)從句，這些從句仍是今后高考熱點(diǎn)，應(yīng)作充分準(zhǔn)備。同時(shí)對(duì)方式狀語(yǔ)從句也應(yīng)引起重視。

（一）時(shí)間狀語(yǔ)從句

　　表示時(shí)間的狀語(yǔ)從句可由when, as, while, whenever, after, before, till (until), since, once, as soon as (或the moment ), by the time, no sooner … than, hardly (scarcely) … when, every time等引導(dǎo)。 e.g. When I came into the office, the teachers were having a meeting.

　　He started as soon as he received the news. Once you see him, you will never forget him. No sooner had I gone to bed than I went to sleep.

　　（二）原因狀語(yǔ)從句

　　原因狀語(yǔ)從句是表示原因或理由的，引導(dǎo)這類從句的最常用的連詞是because, since, as , now that（既然）等，for 表示因果關(guān)系時(shí)（它引導(dǎo)的不是從句）為并列連詞，語(yǔ)氣不如because強(qiáng)。

　　e.g. He is disappointed because he didn't get the position.As it is raining, I will not go out. Now that you mention it, I do remember.

（三）地點(diǎn)狀語(yǔ)從句

　　引導(dǎo)地點(diǎn)狀語(yǔ)從句的連詞是where 和wherever等。

　　e.g. Sit wherever you like.

　　Make a mark where you have a question.

　（四）目的狀語(yǔ)從句

　　引導(dǎo)目的狀語(yǔ)從句最常用的詞（組）是so, so that（從句謂語(yǔ)常有情態(tài)動(dòng)詞）, in order that, in case（以防，以免）等。

　　She has bought the book in order that she could follow the TV lessons. He left early in case he should miss the train.