英语的tenses.怎样分出simple present tensesimple past tense simple f

来源：学生作业帮编辑：搜搜考试网作业帮分类：英语作业时间：2024/04/28 05:45:24

英语的tenses.
怎样分出simple present tense
simple past tense
simple future tense
present perfect
past perfect
future perfect
有什么关键词吗或是怎样应用呢?

simple present tense
一般现在时：is/am/are,或者动词原形.
关键词:often,always,sometimes,every day.
举例:I go to school everyday.(我每天都上学)
simple past tense
一般过去时:was/were,或者动词过去式.
关键词:yesterday,last month,last year,反正和过去有关的词汇都是.
举例:I finished my homework yesterday.(我昨天做了家庭作业)
simple future tense
一般将来时:will/should+动词原形..或者am/is/are+going to do .
关键词:tomorrow,next month,next year,next week,和将来有关的词汇都是.
举例:I will get up at 6:00 tomorrow.(我明天六点要起床)
present perfect
现在完成时:has/have+动词过去分词形式.
关键词:already,(已经,用于肯定句) yet,(还没,用于否定句) so far(到现在为止) since that day(从那天起)
举例:I have already finished my homework.(我已经作完了家庭作业)
I haven't finished my homework yet.(我还没做完家庭作业)
past perfect
过去完成时:had+动词过去分词形式.
关键词:by that day,(到那天为止) until that day,(直到那天)
这种时态用得不多..只要看得懂就行了.
举例:I had travelled to three countries by the year of 20.(我20岁以前去过3个国家旅行)
future perfect
将来完成时:will/should have +动词过去分词形式.
关键词:by next week(到下周为止)by next year(到明年为止)
举例:I will have got 100 gifts by next Sunday.(到下个星期天,我将收到100份礼物)
大概就这样拉...如果不懂,就去请教你们老师吧
他会回答得更为详细的...

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