常用的as句型

1、常用的as句型as是英語中用得非常廣泛而且極其活躍的一個詞。它可以作介 詞、副詞、從屬連詞和關(guān)系代詞用，還可以同其它的詞搭配，構(gòu)成一 些固定的詞組和句型，表達(dá)各種意思。本課僅就as構(gòu)成的一些常用句型作些介紹。1 .時間狀語從句中的asas引導(dǎo)時間狀語從句，表示主句動作和從句動作同時發(fā)生，可譯為“隨著”或“一邊一邊”當(dāng)時候”，例如：As days go by , it becomes colder and colder.（隨著）We get wiser as we get older.She was reading something as she was waiting for the bus

2、 tocome .（當(dāng) 時候；一邊 一邊）2 .原因狀語從句中的asas引導(dǎo)原因狀語從句，表明顯的原因或已知事實。例如：As I ' m so ashamed of my body, I ' m trying to lose weight.We had to walk all the way, as we had no money for fares.As it was getting very late, we soon turned back.3 .讓步狀語從句中的asas引導(dǎo)的讓步狀語從句以部分倒裝的形式出現(xiàn)，從句中的表語、狀 語或謂語部分的實義動詞要前置到句首。若作表語

3、的名詞前有冠詞， 需去掉冠詞。例如：Tired as we were, we didn ' t give up.（形容詞作表語置于句首）Child as she was , she was able to stand on her own feet.(名詞作表語置于句首)Try as he may, he could n' t open the door.(謂語部分實義動詞try置于句首)Muchas I like it, I can' t buy it, for it is too expensive for a student.(副詞作狀語置于句首)4 .比較狀語從

4、句中的asas在比較狀語從句中通常與另一個 as連用，構(gòu)成句型as - as- -,意 為“和一樣”，表同級比較。使用時要注意第一個as為副詞，第二個as為連詞，其基本結(jié)構(gòu)為：as+ adj./ adv. +as 。例如： This film is as interesting as that one(is ).Your pen writes as smoothly as mine (writes).He is as good a player as his sister.其否定式為 not as/so +adj./ adv. +as 。例如：This dictionary is not as

5、/so useful as you think.若有修飾成分，如 twice, three times, half, a quarter 等，則須 置于第一個as之前。例如：Your bag is twice as expensive as mine (is ).5 .方式狀語從句中的asas引導(dǎo)方式狀語從句位于主句之后。例如：Do as you are told to, or you will be fired.We do farm work as the old peasant teaches us.6 .定語從句中的asas引導(dǎo)限制性定語從句，一般與the same或such連用，指代

6、前面的先行詞，在從句中充當(dāng)主語、賓語或表語。He is such a person as is respected by all of us.（作主語）The lady wore the same dress as I bought yesterday.（ 作賓語） He is not the same man as he used to be.（2） as引導(dǎo)非限制性定語從句，指代整個主句，位置比較靈活，可 位于主句前，也可位于主句后，還可位于主句中間。例如：She is a fine singer, as her mother used to be .（作表語）As was reporte

7、d, the old lady injured in the traffic accidentwas in hospital .（ 作主語）The earth, as we know, moves around the sun.（ 作賓語）As is known to us, knowledge is power.7 .并列句中的as如果并列句表“也是如此”之意，可用as+be/助動詞/情態(tài)動詞，如: Her mother is tall and as is she.I often go to school by bike; as do my classmates living near to our school.She c