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中考英语知识点：知识扩展 1. It is since从…以来多长时间了(因为since +从句或名词，表示一段时间) It is five years since we met last time.从我们上次见面已经五年了。 2. It is +before…(…才) It was a long time before I went to sleep again. 过了很长时间我才睡着。 It was an hour before(=until) the police arrived. 过了一个小时，警察才来。 3. 由as soon as, immediately, directly, instantly, the moment, the instant, the minute, 等引导的时间状语从句。这些连词都表示"一…就"。例如: I will go there directly I have finished my breakfast. 吃完早饭，我立即到那里去。 The moment I heard the news, I hastened to the spot.我一听到消息，马上赶到了出事地点。 As soon as I reach Canada, I will ring you up. 我一到加拿大，就给你来电话。 4.【注意】hardly(scarcely, rarely)…when / before, no sooner…than相当于as soon as之意。 (责任编辑：admin) |