t week.他下周要去苏格兰旅游。?I am going to stay for a week.我打算待一个星期。?Look at the dark clouds. It is going to rain.看那乌云,要下雨了。?★be going to do表示将来时,指事先经过考虑的打算或有迹象表明要发生某事。Р4.现在进行时?由“am/is/are+现在分词”构成,表示现在正在发生的事情或近期一直在做的事情。句中常有now, look, listen等标志词。?Look! A bird is flying in the sky.看!一只鸟在天上飞。?She is teaching at a night school now.目前她在一所夜校教学。Р5.过去进行时?由“was/were+现在分词”构成,表示过去某一时间正在发生的事情或过去某段时间一直在做的事情。常与this time yesterday, “when+过去动作”等时间状语连用。?She was watching TV at this time yesterday.昨天这个时候她正在看电视。?They were waiting for you last night.昨晚他们一直在等你。Р6.现在完成时?由“have/has+过去分词”构成,表示过去某时发生的动作一直延续到现在或过去的动作对现在有影响。标志词有since, for, already, yet, so far等。?I have lived in Beijing since 10 years ago.自从10年前我就一直在北京居住。РThey have lost the match.他们已经输了比赛。?★当句中有“How long...?/since.../for...”等时间状语时,句中动词要用延续性动词。非延续性动词与延续性动词的转换如下:
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