高考英語一輪重點復習 Module 5 Unit5
三、重點句型
1. do not rub, as this may break any blisters and the wound may get infected.不要擦拭,因為這樣做會擦破水泡,傷口會感染
小結as的用法:
(一)as作副詞,表示程度,意為“同樣地”。在“as. . . as. . . ”,“not as. . . as. . . ”結構中的第一個as是副詞,作“和/與……(不)一樣”解。e.g.:
jack is as tall as his father.
he doesn’t speak english as/so fluently as you.
(二)as作介詞。
作“如,像”解。e.g.:
they got united as one man.
作“充當,作為”解。e.g.:
as a writer,he was famous.
(三)as作連詞,常用來連接主句和狀語從句。
1. 引導時間狀語從句,作“當……的時候”解,有“隨著……”之意,與while意義相近,強調兩個動作同時發(fā)生;或某事一發(fā)生,另一事立即發(fā)生。e.g.:
he shouted aloud as her ran along. 他一邊往前跑,一邊高聲地呼喊。
i was startled as he opened the door. 他一開門,嚇了我一跳。
as作連詞,相當于when。e.g.:
as a little boy (when he was a little boy)he began to learn to play piano. 他小時候就開始學彈鋼琴。
2. 引導原因狀語從句,作“因為,由于”解,與because的用法相近。e.g.:
i must stop writing now,as i have rather a lot of work to do. 我必須停筆了,因為我還有許多工作要做。
引導方式狀語從句或比較狀語從句,作“正如,(如)像”解。e.g.:
as in your country,we grow wheat in the north and rice in the south. 正如(像)你們國家一樣,我們在北方種小麥,在南方種水稻。(方式狀語從句)
when at rome,do as romans do. 入鄉(xiāng)隨俗。(方式狀語從句)
3. 引導讓步狀語從句,作“雖然,盡管”解。這時從句常用倒裝語序,即把從句中的表語、狀語或動詞原形放在as之前。e.g.:
strange as it may seem,it is true. 盡管這事看上去很奇怪,但卻是真的
try as he might,tom could not get out of the difficulties. 不管怎樣努力,湯姆還是擺脫不了困境。
(四)as作關系代詞。
1. 引導限制性定語從句,用在“such…as”, “the same…as”,“as…as”等結構中,常譯作“像……一樣的人(或物)”,“凡是……的人(或物)”。 e.g.:
he wished to be such a man as lei feng was. 他曾希望做一個像雷鋒那樣的人。
my hometown is no longer the same as it was. 我的家鄉(xiāng)再也不像過去一樣了。
2. 引導非限制性定語從句,用來指代它前面的整個句子(即先行句),意思是“這一點”。這個分句可以位于句首、句中或句末。e.g.:
as is well known,oceans cover more than 70% of the earth. 我們知道,海洋占地球面積的百分之七十以上。
(五)含as的固定詞組的用法
1. as soon as作“一……就”解,引導時間狀語從句。e.g.:
as soon as i get to beijing,i’ll write to you. 我一到北京,就給你寫信。
2. as/so long as作“只要”解,e.g.:
as/so long as you study hard,you’ll make progress. 只要你努力,你就會取得進步。