句子的結構

do as what he said.
照他說的做。
注意：不定式或分詞短語可以代替方式狀語從句。
the man locked the door quickly, as if trying to stop someone from getting in.(分詞短語)
那人把門迅速地鎖上，就好像防止什么人進去。
he pointed to the house as if to say something.(不定式短語。)
他指著那所房子，像是要有什么話說。
(6)讓步狀語從句
引導讓步狀語從句的連詞有：although (though)； however，when，while等；連接代詞what ever，whoever，whichever等；短語even if，even though，no matter what (how，which ，who)等。though不能與but連用。
although it was raining, the football game went on.
盡管正下著雨，足球比賽繼續進行。
however delicious the food was, she refused to eat.
無論這些食品有多么好吃，她都不吃。
while i admit that we haven't much money, i don't think we can't do anything.
雖然我承認我們沒有多少錢，但是我認為還是可以做一些事情的。
old as he is, he tries to do something helpful.
雖然他年歲已經很大了，但他還在盡力做一些助人的好事。
(7)比較狀語從句
常用的連詞有as...as，not as...as，than等。
he is much cleverer than i expected.
他比我原來預料的要聰明得多。
this kind of cloth feels as soft as silk.
這種料子摸上去就如絲綢一般柔軟。
the more she thought about it, the happier she was .
她越想這件事，便越覺得高興。
(8)結果狀語從句
引導結果狀語從句的連詞常用的有：that，so that，such...that，but(that)等。
riding the motorbike is so dangerous that his father refuses to buy one for him.
駕駛摩托車太危險，他父親不給他買。
he went upstairs without shoes so that there was no sound heard.
他脫掉了鞋上樓，以便沒有人聽見聲音。
it is such a good opportunity that you can't miss  it.
這是一個絕好的機會，你絕不能放過。
注意：結果狀語從句與幾種不定式形式的轉換：
①...enough+for名詞(代詞)+to do...與從句的轉換：
→the sitting-room is so large that it can hold a t least twenty people to have a party.
the sitting-room is large enough for twenty people to have a party.
這間客廳很大，能容納20個人聚會一下。
he drove so fast that she was frightened.
→he drove fast enough for her to be frightened.
他把車開得很快，以致把她嚇壞了。
②從句與主句為同一主語時，從句可與下列不定式形式轉換：enough to...，so...as to ，such...as to，too...to...
susan was so clever that she worked out the problem within three minutes.
→susan was clever enough to work out the problem within three minutes .
蘇姍非常聰明，在三分鐘之內就做出了那道難題。
→his car is in such bad condition that it has to  be repaired in the garage.
his car is in such bad condition as to be repaired in the garage.
他的車的車況太差，得去修理廠大修一下。
she is so tired that she can't go any farther.