Adverb Clause/副詞子句

（一）在句子裡，相當副詞作用的子句，稱為「副詞子句」。

（二）引導「副詞子句」的連接詞有：wh~, how, whenever, while, as, since, till, until, after, as long as, as often as, as soon as, the moment that, no sooner …..than, by the time, any time, wherever, if, unless, in case, provided that, suppose that, on condition that, so that, once, because, now that, so that, though, although, even if, even though, whether等。

（三）依其表達功能，有下例九種：

(1) 時間：
I was working when you telephoned.
Mary saw Bill when he passed by the window.
John was not shocked until he saw the sick child.

(2) 地方：Where there is a will, there is a way.

Mary followed Tom wherever he went.

Helen was told to stay where she was.

(3) 狀態：
Do as I have told you.
David did his work as he was told.
Paul ran as if a mad dog was chasing him.

(4) 理由：
As it was very cold, I did not go out.
Kevin failed in the examination because he was too lazy.
Since Samuel was still a boy, he was not admitted.

(5) 目的：
He works hard so that he may succeed.
We eat so that we may live.
Don’t go near the pier lest you should fall into the water.

(6) 讓步：
Though he is poor, he is honest.
Though Jimmy is young, he is an able executive.
No matter what you say, I will sue him for damages.

(7) 比較：
He is as tall as I am.
James works harder than George does.
The more money he has, the more he wants.

(8) 條件：
If you don’t work hard, you will fail.
I shall come if Linda also comes.
The match will be played tomorrow if it stops raining now.

(9) 結果：
He worked so hard that he succeeded.
He ran so quickly that Alice could not catch up.
Rose sang with such a beautiful voice that the audience was completely absorbed in the music.