(2) 表示現在已安排好的未來事項，行程等活動。

The museum opens at ten tomorrow.博物館明天10點開門。(實際上每天如此。)

一般現在時代替過去時

1 )"書上說"，"報紙上說"等。

The newspaper says that it’s going to be cold tomorrow.

報紙上說明天會很冷的。

2) 敘述往事，使其生動。

Napoleon’s army now advances and the great battle begins.

一般現在時代替完成時

1) 有些動詞用一般現在時代替完成時：

hear, tell, learn, write , understand, forget, know, find , say,remember.

I hear (= have heard) he will go to London.

I forget (=have forgotten) how old he is.

2) 句型 " It is … since…"代替"It has been … since …"

3) It is (= has been) five years since we last met.

現在進行時代替將來時

1) 表示即將發生的或預定中計劃好的活動。

Are you staying with us this weekend? 這周和我們一起度周末嗎?

We are leaving soon. 我們馬上就走。

2) 漸變動詞，如：get, run, grow, become, begin及die.

He is dying.