1. 现在进行时
表示正在发生的事情或进行的动作,常与now,listen,look等词连用。
结构是主语+be动词(am, is, are)+动词ing.
如:It is raining now.
外面正在下雨。
It is six o’clock now.
现在6点了。
My parents are reading newspapers in the sitting room.我父母正在客厅看报纸。
Look! The children are having a running race now.看!孩子们正在赛跑。
问句将be动词移前,否定句在be动词后+not.
2. 一般现在时
表示经常反复发生的事情或动作,常与often, usually, sometimes, always, every day(week year…) 等词连用。
结构是主语+动词原形;当主语为第三人称单数即he,she, it, Tom, my mother, the boy等词时,动词后加s或es.
如:We have an English lesson every day.我们每天都要上英语课。
Do the boys run faster than the girls? Yes, they do.
男孩比女孩跑的快吗?是的。
问句借助于do, does否定句借助于don’t, doesn’t,后面动词一定要还原。
3. 一般过去时
表示发生在过去的事情或存在的状态,常与just now; a moment ago; … ago; yesterday; last ( week; month; year; Monday; weekend); this morning等词连用。
结构是主语+be动词的过去式(was; were)或主语+动词的过去式。注意:be动词与动词过去式不可同时使用。
如:My earphones were on the ground just now.我的耳机刚刚还在呢。
Where were you last week? I was at a camp.你上个星期去哪了?我去野营了。
What did you do yesterday? I visited a farm.
你昨天去干嘛了?我去参观农场了。
问句有be动词将be动词移前,没有be动词借助于did,后面动词还原;否定句有be动词在后面加not,没有借助于didn't后面动词还原。
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