grammar as 的用法

1、AS的用法的用法As 可作連詞、關(guān)系代詞、可作連詞、關(guān)系代詞、介詞介詞作連詞時，可以引導(dǎo)各種狀語從句作連詞時，可以引導(dǎo)各種狀語從句 1.作作“當(dāng)當(dāng)?shù)臅r候的時候”解時解時,引導(dǎo)時間狀語引導(dǎo)時間狀語從句從句,表示兩個動作同時或是表示兩個動作同時或是 交替發(fā)生。交替發(fā)生。eg : The girl dances as she sings on the stage. As time went on / by, she became more and more worried. 2.當(dāng)當(dāng)As作作“既然既然”“”“由于由于”的解的解時，就是引導(dǎo)原因狀語從句時，就是引導(dǎo)原因狀語從句eg: As (= Sin

2、ce) youre not feeling well, you may stay at home.3.當(dāng)當(dāng)As作作“按照按照方式方式”,“像像”的解時，就是引導(dǎo)方式狀語從句的解時，就是引導(dǎo)方式狀語從句eg You should do everything as I do.4.作作“雖然、盡管雖然、盡管”解時，引導(dǎo)讓步解時，引導(dǎo)讓步狀語從句。常用倒裝語序狀語從句。常用倒裝語序,即即adj. /adv. / n.+ as +主語主語+謂語謂語+主句主句Child as he is, he knows a lot.5.As 引導(dǎo)比較狀語從句，常見于引導(dǎo)比較狀語從句，常見于“(not)as . as”

3、 “(not)so.as”,引導(dǎo)比較狀語從句。引導(dǎo)比較狀語從句。前一個前一個as是副詞是副詞,后一個后一個as是連詞是連詞They helped the old as much as possible.I dont speak English so/ as well as she does. 2.As 作關(guān)系代詞引導(dǎo)定語從句作關(guān)系代詞引導(dǎo)定語從句 限制性定語從句限制性定語從句 非限制性定語從句非限制性定語從句先行詞一般有先行詞一般有the same、 such 等詞等詞修飾。修飾。先行詞一般是一個先行詞一般是一個句子或短語句子或短語限制性定語從句限制性定語從句 :Such a good fil

4、m as you described is well worth seeing.非限制性定語從句非限制性定語從句:She is late, as is often the case.1.As is well-known, Taiwan belongs to China.另外，在非限定定語從句中，謂語動詞另外，在非限定定語從句中，謂語動詞是是be said ,be known , be expected ， be announced ，必須用，必須用as 引導(dǎo)。引導(dǎo)。2.As is known to everybody, the moon travels round the earth once every monthAs作介詞時，引導(dǎo)的介詞短語大多用作狀語As a League member, Ill take the lead in everything. They have me as one of their own children.（賓補(bǔ)）so as to 為的是，以便so.as to 如此以至于as much 同樣的as blind as a bat