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have started
...为什么要用
have
started
而不是have beenon?
答:
start属于非延续性动词,不能跟一段时间状语连用。非延续性动词是可以用于完成时的,只是不能与一段时间状语连用,不管什么时态。In Bangladesh, the monsoons
have
started
. 在孟加拉国,雨季已经开始。《柯林斯英汉双解大词典》The new students have started registering. 新生已开始报到。《新英汉大辞典...
sart,
have
start,
started
,
had
started的区别?
答:
start 表示现在时
have started
表示现在完成时,已经开始 started 表示过去时,在过去的某一时间开始了
had started
表示过去完成时,表示在过去某一时间之前就已经开始了。
...为什么要用
have
started
而不是have beenon?
答:
Start
是非延续性的动词,非延续性动词是可以用现在完成时的,但是非延续性动词不能用在有时间段的现在完成时句子里面,这个时候要换成延续性的可以接时间段的动词形式。比如句子:The lecture
has
started
.(讲座已经开始了。)The lecture has been on for twenty minutes. (讲座已经开始20分钟了。)
I
have
started
drinking coffee recently.请问这是现在完成时_百度知 ...
答:
have started
是句子的谓语,而 drinking是宾语drinking coffee里面的谓语,这里用非谓语动词的形式。
have
started
doing是什么时态
答:
现在完成进行时,是英语中动词的一种基本时态,其构成为:主语+助动词(
have
/has)+been+动词的现在分词+其他成分。表示动作从某一时间开始,一直持续到现在,或者刚刚终止,或者可能仍然要继续下去。
...为什么
start
的过去玩成进行时是
have
start
答:
start和join都是非延续性动词把。。那为什么start的过去玩成进行时是
have
startShe have
started
smoking.她开始抽烟了。I have joined the crowed of people.我加入了人群中。没有have been join
I
have
started
the English classes since three weeks ago. 这句...
答:
start
是瞬时动词,表示一瞬间的动作,后不能跟since+一段时间 因为一start就结束了,你不能保持开始这个动作,保持三周,同例如:come 这些瞬时动词后,都不能与段时间连用 如:I
have
come to China for 1 year.(错)I have been in China for 1 year.(对)原句应改为 I have
had
the ...
It is said to
have
started
in the early 1800s的主语是?
答:
It is said to
have
started
in the early 1800s. (据说它起源于19世纪初期。)It 是形式主语,它代替动词不定式to have started (直正主语)。is said (被动语态,谓语)。in the early 1800s 时间状语。
...since the 1990s, the Smiths
have
started
a small busines...
答:
D 试题分析:考查时态。从时间状语since the 1990s,可知应该使用现在完成时或现在完成进行时,然后根据后面主句的谓语动词
have
started
可推断,do 这个动词还在继续,故使用现在完成进行时。句意:自从20世纪90年以来,史密斯夫妇开了一家小公司,此外他们还一直在做农活。
英语现在完成时
答:
have
finished/ended/completed ——have been over; 11. have married ——have been married; 12. have
started
/begun to do sth. —— have done sth. ; 13. have begun ——have been on 14. have borrowed/bought ——have kept/
had
15. have lost ——haven’t had 16. have put on ——...
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