【#文档大全网# 导语】以下是®文档大全网的小编为您整理的《现在完成时态》,欢迎阅读!
现在完成时态
1、现在完成时态表示过去发生的动作对现在造成的影响或结果。本时态标志词:
already (已经,用于肯定句中,放在have /has之后或句尾); yet (仍然,还,用于疑问句或否定句的句尾) just(刚刚,放在have /has之后); before(以前,放在句尾); ever(曾经,放在have /has之后)
never (从没有,在have /has之后) 例句: (1)Our teacher has just left. (2)We have studied English already. (3)I have not finished the homework yet. (4)He has never been to Beijing before.
2、某个动作从过去已经开始,一直持续到现在,还有可能持续到将来.动作的持续性要通过一段时间来表示一段时间的表达方法有两种:
for: +一段时间 for a year for two weeks for three years
Since +过去的某一时刻, since nine since last week Since +一般过去时态的时间状语从句 since you came since you got home.
注意:结束性动词不能和表示一段时间的时间状语连用,但是它们可以转换成相应的延续性动词:
(1)直接用延续性动词 buy– have;catch(get) a cold –have a cold;borrow—keep;become—be;put on—wear
(2)转换成be+名词 join the army – be a soldier;join the Party –be a Party member; go to school– be a student
(3)转换成be+形容词或副词 die—be dead;finish — be over;begin—be on;leave—be away ; fall sleep — be asleep close — be closed come to/ go to/arrive at(in)+某地—be in(at) +某地
(4)转换成 be+介词短语go to school– be in school ; get up_ be up; 3、现在完成时态常见标志词:
1. already(已经), just(刚刚), never(从未/从没有), ever(曾经), yet(仍然/还), before(以前)(句尾时)。
2. since+点时刻或从句; for+段时间; how long(疑问句中用来提问since/for短语的)
3. so far;till now;by now(到目前为止;迄今)
4. recently近来 in the past/last+段时间 在过去的几年中 5. once(一次),twice, three(four…) times
6. It is the+最高级+n.+ (that) sb.have ever done 例:What’s the best gift you have ever received? 你曾收到的最好礼物是什么?
4、现在完成时句型举例:
1. Have you ever been to an amusement park? 你曾经去过游乐园吗?Yes, I have./ No, I haven’t.
2. I have never been there. Me neither=Neither have I. 我也没有. 3. Where is he? He has gone to the Beijing.
4. How long has he been in Beijing? (不能用come/arrive) 5. I’ve never been to an aquarium. 我从没去过水族馆.
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