1)过去进行时态:
(1)主动形式和现在进行时态类似,只是be的形式为was / were。被动为was / were being done。疑问和否定略。
(2)意义:和现在进行时完全对应,只是往过去推一步。略。
2)过去完成时态:
(1)主动形式为had done;被动形式为had been done;否定和疑问略。
(2)意义:和现在完成时态类似,只是往过去推一步。
使用过去完成时的关键是:要有一个更晚的时间点(一个时间状语或一个过去时动作)和那个过去完成时态动作或状态对比存在。
①已完成用法:过去A点之前就已经发生的行为B,对A点造成影响或结果。行为B就用过去完成时态。多用非持续性动词。如:
They had finished the job when I got there. We had had lunch by twelve o’clock yesterday. He remembered that the key had been left in the taxi. I had already / just / hardly got home when the telephone rang.
但是相继发生的过去动作用表示承接关系的连词连接,都用一般过去时。如:
She went to the baby and undressed him. She went to the baby, undressed him and put him in bed.
另外,表示两个几乎同时发生的瞬间动作的分句用表示一…就…的连词when/ the moment(minute) / as soon as连接起来,两个动作也都用一般过去时。如:
When he opened the door, the bird flew out. 他开门的时候,鸟飞了出去。
The moment she stepped in, we grabbed her.她一走进来,我们就抓住了她。
如果要强调两个动作之间的时间差,先发生的就用过去完成时。如:
When he had opened the door, the bird flew out. 他把门打开之后,鸟飞了出去。这里的when = after。
②未完成用法:一个动作行为B在过去A点之前就开始一直持续到A点,还要继续持续或刚刚结束。行为B就用过去完成时态。要用持续性动词,并且和表示 持续到过去某点的时段状语连用,如:by+过去时点,since+过去时点;(un)til then, up to then, for+时段等。如:By six o’clock they had worked for five hours. They had known each other for eight years when they got married.
3)过去完成进行时态:类似于现在完成进行时态,只是往过去推一步。无被动形式。略。
4)将来表达法:
(1)形式:主动1) will do 2) is / am / are going to do 3) is / am / are doing 4) will be doing 5) is / am / are to do 6) is / am / are (just) about to do 7) do / does 被动及否定疑问略。
(2)意义:
①will do
will可以作情态助动词表示坚决的意志、意愿等,也可以作时态助动词表示未来会发生的事情。这里讨论的是后者。前者会在情态助动词章节处理。
A.表示说话时才做出的临时决定,多见于对别人的话或周围环境做出的反应。如:
Tom: The phone is ringing. Lucy: I’ll go and answer it.
又如:Seeing the bed in a mess, Tom said to himself, “ I will clean it up this afternoon.”
B.表示说话人根据自己的主观经验或知识对将来的客观事情的预测。如:
Take this medicine and you will get better soon. My mum will kill me if I do this.
②is / am / are going to do
A.表示说话之前经过考虑的意图,如:从下面语境看得出,明显说话前就已经做了准备。
I’ve bought some bricks. I’m going to build a house.
We talked about the coming holiday and have decided on a place to go to. We’re going to visit our home village.
B.表示说话时已有迹象表明某客观事情会很快发生。如:Noticing the photocopy(复印) machine working very slowly, John knows that it’s going to take a long time to photocopy all the documents.
Feeling the house shaking, she shouted, “Get out! The house is going to fall!”
③is / am / are doing
表示按计划,安排很近的将来会发生某事。如:I am meeting Tom tonight. He’s taking me to the theatre.今晚我要见Tom。他要带我去看戏。(和Tom已经安排约好见面和他带我去看戏。)