Question

as有哪些用法,在句子中能作什么成分,能引导什么从句?希望不要完全复制

Answer 1

1 as 可引导定语从句,作主语或宾语,指代整个句子,常位于句首,如：As is know to all, the sun rises in the east.

2 as 可引导时间状语从,意思是“随时.",如：As he goes older, he knows more things.

3 as 可引导原因状语从句,意思是“由于/既然.”,如：I needn't tell you the answer again as you already know it.