表示正在發(fā)生的事情或進行的動作，常與now,listen,look等詞連用，結(jié)構(gòu)是主語+be動詞(am, is, are)+動詞ing.

如：It is raining now.

外面正在下雨

It is six o’clock now.

現(xiàn)在6點了

My parents are reading newspapers in the sitting room.

我父母正在客廳看報紙

Look! The children are having a running race now.

看！孩子們正在賽跑

問句將be動詞移前，否定句在be動詞后+not.

表示經(jīng)常反復(fù)發(fā)生的事情或動作，常與often, usually, sometimes, always, every day(week year…) on Sundays等詞連用。

結(jié)構(gòu)是主語+動詞原形；當(dāng)主語為第三人稱單數(shù)即he,she, it, Tom, my mother, the boy等詞時，動詞后加s或es.

如：We have an English lesson every day.

我們每天都要上英語課

Do the boys run faster than the girls? Yes, they do.

男孩比女孩跑的快嗎？是的

問句借助于do, does否定句借助于don’t, doesn’t，后面動詞一定要還原。

表示發(fā)生在過去的事情或存在的狀態(tài)，常與just now; a moment ago; … ago; yesterday; last ( week; month; year; Monday; weekend); this morning等詞連用。

結(jié)構(gòu)是主語+be動詞的過去式（was; were）或主語+動詞的過去式。

注意：be動詞與動詞過去式不可同時使用。

如：My earphones were on the ground just now.

我的耳機剛剛還在呢。

Where were you last week? I was at a camp.

你上個星期去哪了？我去野營了

What did you do yesterday? I visited a farm

你昨天去干嘛了？我去參觀農(nóng)場了。

問句有be動詞將be動詞移前，沒有be動詞借助于did，后面動詞還原；

否定句有be動詞在后面加not，沒有借助于didn't后面動詞還原。

表示將要打算發(fā)生的事情或動作，常與tomorrow, next week(year; Tuesday…), this week( weekend ;evening; afternoon;…)today等詞連用。結(jié)構(gòu)是主語+be(am, is, are) going to + 動原或主語+will +動原。

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.

孩子們下個星期將參加運動會。

Tom will/is going to see a play with his father this evening.

Tom今晚將和父母去看演出。

問句將be動詞或will移前；否定句在be動詞或will后加not.