從句的改寫方法知識(shí)點(diǎn)整理
1.用“連詞＋分詞”來替代從句
當(dāng)主句和從句的主語一致，謂語的時(shí)態(tài)又是同時(shí)段發(fā)生，可以把從句的主語省去，變謂語動(dòng)詞為現(xiàn)在分詞或過去分詞。如果分詞的邏輯或時(shí)間意義不明確，還可以保留連詞。
例1：Guests mingle while enjoying cake, punch and other treats.
客人們一邊吃蛋糕、喝飲料以及享用其它的食品，一邊卻在一起聊天。
例2：While speaking out against Hitler’s atrocities, the American people generally favored isolationist policies and neutrality.雖然美國人譴責(zé)希特勒的暴行，但是他們卻一慣奉行孤立政策和中立態(tài)度。
例3：Plastics are materials which are softened by heat and set into lasting form when shaped in a mold.
注：如果從句的謂語是系動(dòng)詞be，在簡化句型時(shí)應(yīng)該把be動(dòng)詞改成being，但是由于being語義意義，所以可以省略，這樣就造成了形容詞作狀語了。
例1：These apples, when ripe, are picked.這些蘋果一旦熟了就要被摘下來。
例2：She knows all the hazards of smoking while pregnant.她知道懷孕時(shí)吸煙的一切危害性。
2.用“介詞＋分詞”來替代從句
一般說來，用on和at表示“as soon as, once”。on后面常接“來、去”之類的詞，at后面常接“聽到、看到”之類的詞。in后面接其他帶動(dòng)作的詞，相對(duì)于從屬連詞“while”。
例1：On removing them he was stunned to see that the plates were fogged where the crystals had covered them.當(dāng)他把晶體揭開時(shí)，發(fā)現(xiàn)盤子上方霧蒙蒙，他吃了一驚。
例2：In running down the stairs, I heard the clock struck twelve.
我在跑下樓的時(shí)候，聽見鐘敲了十二下。
例3：He jumped with joy at hearing the news.他一聽到這個(gè)消息就高興得跳了起來。
3.用“介詞＋動(dòng)作性名詞”來替代從句
同上面一樣，At基本上后接sound，sight“聽到、看到”之類的詞；on接“回來、到達(dá)”之類的詞；用in，during表示“when, while”；用over表示“while”之意。當(dāng)然，這一切都是相對(duì)的分類。
例1：The little girl passed out at sight of a snake.小女孩一看到蛇就昏過去了。
例2：In our hurry to get from one place to another, we failed to see anything on the way.當(dāng)我們急急忙忙從這兒到那兒的時(shí)候，一路上什么也沒有看見。
例3：On arrival at the railway station, he found the train had already left.當(dāng)他到達(dá)火車站的時(shí)候，他發(fā)現(xiàn)火車已經(jīng)開走了。
例4：He had intended to go, but on second thoughts, he gave up the idea.
他本來想去，但進(jìn)一步考慮后,打消了這個(gè)念頭。
例5：During my absence, would you please take care of my cat?
在我不在的時(shí)候，請(qǐng)幫我照看一下貓，好嗎？
例6：He fell asleep over a book.他看書的時(shí)候睡著了。
例7：After reelection he announces that he will not help.經(jīng)過一番考慮后，他宣布將不提供任何幫助。
例8：After graduation, he went to America for his PhD studies.畢業(yè)之后，他去了美國攻讀博士。
4.用“并列句”代替
例句：Two other poses were tried and I emerged from the booth to find a lot people waiting for my signatures.
又試了兩個(gè)其他的姿勢后，我從拍照亭里出來，發(fā)現(xiàn)很多人在那里等待我的簽名。