Question

短暂动词不能用于现在完成时么？谢谢

Answer 1

完全可以啊！只是在有些特定场合下不用。
如 They have already arrived. 他们已经到了。这句arrived 是短暂动词，完全可用于现在完成时啊
【短暂动词不能用于现在完成时】这种说法本身就错！

只能使用延续性动词的场合：
(1)在含since的主句中。（否定句不限制）
(2)在含有for短语 (表时间段)的句中。（否定句不限制）
上述两条可参考有关since, for的用法
(3)在how long引导的疑问句或宾语从句中。如 How long have you kept the magazine? (疑问句) / I don’t know how long we will keep the magazine. (宾语从句)
(4)在while引导的时间状语从句中。如 They went out while I was having dinner.
(5)在含until的复合句中：
a.当主句是肯定句时，主句谓v.是延续性动词。如 I will stay here until he comes back.
b.当主句是否定句时，主句谓v.是终止性动词。 如 I won’t go to bed until he comes back.
(6)在使用“不再”的句子中：
a.如果用no longer / not any longer，则谓v.用延续性动词。如 He no longer lives here.
b.如果用no more / not any more，则谓v.用终止性动词。如 Tom can’t get good marks in the exam any more.
(7)当使役动词或感官动词后接现在分词作宾补时，现在分词用延续性动词。如 What made the machine working all the time? / When I walked into the room, I found her lying on the floor.
(8)在现在完成进行时的主句中，谓语动词用延续性动词。 如 He has been skating for 4 hours on the ice.

除此之外，短暂性动词(终止性动词)随便用！呵呵

Answer 2

瞬间性动词是可以用在现在完成时中的，但是后面不能接时间段。

所谓的短暂动词/瞬间动词是指“转瞬即逝”的动作，或者“延续时间”极其短暂的动作，自然不可以和一段时间连用了。

而这个“转瞬即逝”的动作结束之后即进入或者保持了“某种状态”，“某种状态”自然可以延续一段时间，自然可以接表示一段时间了。

举个例子吧。

I have joined in the army for three years.
我已经参军三年了。

分析：
就“joined in the army” 这一过程而言，其早已经结束，何来的“for three years”？ 而是作为一个军人的状态，至今“for three years”。

所以应该是：

I have been in the army for three years.
我已经参军三年了。

或者是：

I have joined in the army.
我已经参军。

道理就是这么简单。

Answer 3

能。比如：I have bought it.(我已经买下它了。）
但是短暂动词的肯定句不能和时间段连用：
错：I have bought it for two days.

Answer 4

恩恩
现在完成时用来表示发生在过去某一时刻的,持续到现在的动作或状态（be动词表示）常与for（+时间段）,since（+时间点或过去时的句子）连用.
可以将短暂动词改成延续性动词
常用瞬间动词变延续性动词表： 1. have arrived at/in sw. got to/reached sw. come/gone/moved to sw. →have been in sw./at…相应的介词 2. have come/gone back/returned → have been back 3. have come/gone out →have been out 4. have become → have been 5. have closed / opened→ have been closed/opened 6. have got up → have been up； 7. have died → have been dead； 8. have left sw. → have been away from sw. 9. have fallen asleep/got to sleep → have been asleep； 10. 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 →have worn 17. have caught /get a cold → have had a cold； 18. have got to know → have known 19. have/has gone to → have been in 20. have joined/have taken part in the league/the Party/the army →have been a member of/ have been in/have been the Party’s member/the league member/the soldier…

Answer 5

一般不可以 有的是前面加Be动词才能表状态