小升初英语语法：动词时态(4)

　　3)　 be +不定式表将来，按计划或正式安排将发生的事。

　　We are to discuss the report next Saturday.

　　4)　be about to +不定式，意为马上做某事。

　　He is about to leave for Beijing.

　　注意：be about to 不能与tomorrow, next week 等表示明确将来时的时间状语连用。

　　11.5 be going to / will

　　用于条件句时， be going to　表将来

　　will　表意愿

　　If you are going to make a journey, you'd better get ready for it as soon as possible.

　　Now if you will take off your clothes, we will fit the new clothes on you in front of the mirror.

　　11.6 be to和be going to

　　be to 表示客观安排或受人指示而做某事。

　　be going to 表示主观的打算或计划。

　　I am to play football tomorrow afternoon.　　 (客观安排)

　　I'm going to play football tomorrow afternoon. (主观安排)

　　11.7 一般现在时表将来

　　1）下列动词：come, go, arrive, leave, start, begin, return的一般现在时表将来。这主要用来表示在时间上已确定或安排好的事情。

　　The train leaves at six tomorrow morning.

　　When does the bus star? It stars in ten minutes.

　　2）倒装句，表示动作正在进行，如：

　　Here comes the bus. = The bus is coming.

　　There goes the bell. = The bell is ringing.

　　3）在时间或条件句中。

　　When Bill comes (不是will come), ask him to wait for me.

　　I'll write to you as soon as I arrive there.

　　4）在动词hope, take care that, make sure that等后。

　　I hope they have a nice time next week.

　　Make sure that the windows are closed before you leave the room.

　　11.8 用现在进行时表示将来

　　意为："意图"、"打算"、"安排"、常用于人。常用词为 come, go, start, arrive, leave, stay等。

　　I'm leaving tomorrow.

　　Are you staying here till next week?

　　11.9 现在完成时

　　现在完成时用来表示之前已发生或完成的动作或状　态，其结果的确和现在有联系。动作或状态发生在过去　但它的影响现在还存在；也可表示持续到现在的动作或　状态。其构成： have (has) +过去分词。