英語的介詞 as 都有 哪些用法[朗讀]

as作連詞的用法：
1、作，當的時候，引導時間狀語從句。
例句：as a young man,he was active in sports。
2、as等於since，作既然。
例句：as he wasn't ready in time,we went without him。
3、作，雖然、儘管，引導讓步狀語從句。
例句：tired as they were,they walked on。
as作關係代詞的用法：
例句：he is very careful,as his work shows。
as作介詞的用法：
as引導的介詞短語大多用作狀語。
例句：as a league member，i'll take the lead in everything。