as在引導定語從句時相當於代詞，一般作主語，而引導狀語從句時可是為連詞，表原因、讓步等等。下面是小編整理的as定語從句狀語從句，歡迎大家閱讀參考。
AS在定語從句中的.用法
意為"和……一樣"，表示同級的比較。使用時要注意第一個as為副詞，第二個as為連詞。例如：
我們要儘量少犯錯誤
should make a few mistakes.
should avoid mistakes.
should make (as) a few mistakes.
4.(as) we should (avoid mistakes)
should make as a few mistakes as we should.
我們要儘量多吃蔬菜
should eat much vegetable food.
should eat the food.
should eat (as ) vegetable food.
4.(as) we should (eat the food).
should eat as vegetable food as we should.
the same~~as~~
他不再是我認識的那個花花公子。
is not the playboy.
2.i know the boy years ago.
is not the (same) playboy.
3.(as) I know (the boy) years ago.
is not the same playboy as i know.
as引導讓步狀語從句
結構： n./ v.原型 / adj. / adv. + as + 其他
1. adv. 提前：
Although he failed in doing his experiment again, he didn’t lose heart.
Again as he failed in doing his experiment, he didn’t lose heart.
2. adj. 提前：
Although the necklace was beautiful, we thought it was over-priced.
Beautiful as the necklace was, we thought it was over-priced.
3. n. 提前：
Although she is a child, she is knowledgeable.
Child as she is, she is knowledgeable.
單數可數名詞前一般不帶冠詞
4. v. 提前：
Although I failed, I would never stop trying.
Fail as I did, I would never stop trying.
Try as I may, I could never explain what I hear when you don’t say a thing.
Although we may dislike him, we have to acknowledge his greatness.
Dislike him as we may, we have to acknowledge his greatness.
動賓短語同時提前
