When you arrive at home,please tell me.
After you read this book,please clean the room.
Before he does his homework,he will watch TV.
He won't go to bed until his mother comes back.
I will tell you as soon as Tom finishes his work.
when(連詞,“當(dāng)...的時(shí)候”),
after(連詞,“在...之后”),
before(連詞,“在...之前”),
until(連詞,“直到...為止”),
as soon as(連接性詞組,“一...就...”).
以上幾個(gè)是時(shí)間狀語從句最常見的連接詞(組).