初中英语连词知识点：引导时间状语从句的连词
when: Don't get excited when you talk. 讲话时别激动。
while: We must strike while the iron is hot. 我们要趁热打铁。
as: He smiled as he passed. 他经过时笑了笑。
before: It will be five years before we meet again. 要五年后咱们才能再相见。
after: I'll tell them after you leave. 我将在你走后告诉他们。
until, till: I propose waiting till the police get here. 我建议等警察来了再说。
since: How long is it since you came to London? 你到伦敦有多久了？
whenever: Whenever it is possible, they play outside. 一有机会他们就到外面玩耍。
while: We must strike while the iron is hot. 我们要趁热打铁。
as: He smiled as he passed. 他经过时笑了笑。
before: It will be five years before we meet again. 要五年后咱们才能再相见。
after: I'll tell them after you leave. 我将在你走后告诉他们。
until, till: I propose waiting till the police get here. 我建议等警察来了再说。
since: How long is it since you came to London? 你到伦敦有多久了？
whenever: Whenever it is possible, they play outside. 一有机会他们就到外面玩耍。
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