高中英语句型归纳
1. be doing/ be about to do/be on the point of doing / had done…, when…(when:这时, 强调一个动作突然发生)1). I was walking along the river, when I heard a drowning boy cry for help.2). I was about to leave when it began to rain.3). I had just finished my test paper when the bell rang, announcing the exam was over.
2. It was (not ) + 时间段+before +普通过去时 过了一段时间就…….. It will (not )be+ 时间段+before +普通现在时 要过一段时间才会… It is/ has been +时间段+ since….. It was +点时间+ when….. It was +时间状语+ that …..(强调句)


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