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.
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…) on Sundays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。
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。
一般将来时
表示将要打算发生的事情或动作，常与tomorrow, next week(year; Tuesday…), this week( weekend ;evening; afternoon;…)today等词连用。结构是主语+be(am, is, are) going to + 动原或主语+will +动原。
如：What are you going to do tomorrow? I am going to have a picnic.
你明天要去干嘛？我要去野餐。
The childre are going to have a sports meeting next week.
孩子们下个星期将参加运动会。
Tom will/is going to see a play with his father this evening.
Tom今晚将和父母去看演出。
问句将be动词或will移前；否定句在be动词或will后加not.
