在英語(yǔ)三種分句中，副詞分句種類最多，用途最廣。就其功用或意義說(shuō)，副詞分句可以用來(lái)表示“時(shí)間、原因、條件、讓步、地點(diǎn)、目的、結(jié)果、方式、比較”等。
時(shí)間副詞分句由從屬連詞 when, since, before, after, while, as soon as 等引導(dǎo)。例如：
● Give me a call when you are free.
● Jim had done his homework before he went to class.
● As soon as the speaker entered the auditorium, the audience clapped.
原因副詞分句由從屬連詞 because, since, as 等引導(dǎo)。例如：
● Helen got the job because she was the most suitable candidate.
● As he was tired, he went to bed early.
條件副詞分句由從屬連詞 if, unless 等引導(dǎo)。例如：
● If you try hard, you are sure to improve.
● We will leave as planned unless we are informed otherwise.
讓步副詞分句由從屬連詞 though, although 等引導(dǎo)。例如：
● Though David was not well, he came to work as usual.
● I enjoy walking although I do not go out as much as I used to.
地點(diǎn)副詞分句由從屬連詞 where, wherever 等引導(dǎo)。例如：
● Where there is oppression, there is resistance.
● In today's world, you can go wherever you want.
目的副詞分句由從屬連詞 so that, in order that 等引導(dǎo)。例如：
● Please speak louder, so that all can hear you.
● The students work hard in order that they can pass.
結(jié)果副詞分句由從屬連詞 so……that, such……that 等引導(dǎo)。例如：
● The weather is so hot that I don't like to go out of doors.
● China is such a large country that it takes time to make it a fully developed nation.
方式副詞分句由從屬連詞 as, just as……so 等引導(dǎo)。例如：
● We will do as we are told.
● Just as men sow, so will they reap.
比較副詞分句由從屬連詞 as, than 等引導(dǎo)。例如：
● Dick is as smart as you （are）.
● We know you better than he does.
這里有幾點(diǎn)要注意。第一、當(dāng)副詞分句在句首出現(xiàn)時(shí)，要用逗號(hào)和主句隔開。第二、習(xí)慣上，先出現(xiàn)的分句的主語(yǔ)要用名詞，后出現(xiàn)的用代詞，如：
Before John went out, he locked the door.
第三、有些副詞分句可以在句首，就把它們放在句首，主句在后。這樣可以使人更注意主句中的內(nèi)容，達(dá)到較好的傳訊效益。例如：
a. Tom was absent as he was ill.
b. As Tom was ill, he was absent.
a. The boys ran home when it rained.
b. When it rained, the boys ran home.
a. You will do well if you surge ahead.
b. If you surge ahead, you will do well.
a. Betty did not get the job though she was interviewed.
b. Though Betty was interviewed, she did not get the job.
時(shí)間副詞分句由從屬連詞 when, since, before, after, while, as soon as 等引導(dǎo)。例如：
● Give me a call when you are free.
● Jim had done his homework before he went to class.
● As soon as the speaker entered the auditorium, the audience clapped.
原因副詞分句由從屬連詞 because, since, as 等引導(dǎo)。例如：
● Helen got the job because she was the most suitable candidate.
● As he was tired, he went to bed early.
條件副詞分句由從屬連詞 if, unless 等引導(dǎo)。例如：
● If you try hard, you are sure to improve.
● We will leave as planned unless we are informed otherwise.
讓步副詞分句由從屬連詞 though, although 等引導(dǎo)。例如：
● Though David was not well, he came to work as usual.
● I enjoy walking although I do not go out as much as I used to.
地點(diǎn)副詞分句由從屬連詞 where, wherever 等引導(dǎo)。例如：
● Where there is oppression, there is resistance.
● In today's world, you can go wherever you want.
目的副詞分句由從屬連詞 so that, in order that 等引導(dǎo)。例如：
● Please speak louder, so that all can hear you.
● The students work hard in order that they can pass.
結(jié)果副詞分句由從屬連詞 so……that, such……that 等引導(dǎo)。例如：
● The weather is so hot that I don't like to go out of doors.
● China is such a large country that it takes time to make it a fully developed nation.
方式副詞分句由從屬連詞 as, just as……so 等引導(dǎo)。例如：
● We will do as we are told.
● Just as men sow, so will they reap.
比較副詞分句由從屬連詞 as, than 等引導(dǎo)。例如：
● Dick is as smart as you （are）.
● We know you better than he does.
這里有幾點(diǎn)要注意。第一、當(dāng)副詞分句在句首出現(xiàn)時(shí)，要用逗號(hào)和主句隔開。第二、習(xí)慣上，先出現(xiàn)的分句的主語(yǔ)要用名詞，后出現(xiàn)的用代詞，如：
Before John went out, he locked the door.
第三、有些副詞分句可以在句首，就把它們放在句首，主句在后。這樣可以使人更注意主句中的內(nèi)容，達(dá)到較好的傳訊效益。例如：
a. Tom was absent as he was ill.
b. As Tom was ill, he was absent.
a. The boys ran home when it rained.
b. When it rained, the boys ran home.
a. You will do well if you surge ahead.
b. If you surge ahead, you will do well.
a. Betty did not get the job though she was interviewed.
b. Though Betty was interviewed, she did not get the job.