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A:what's the matter with you?You look so pale.

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A:what's the matter with you?You look so pale.
B:I didn't get o sleep last night.I ____for maths test all night.
请选择正确答案,然后分析一下,
正确答案我知道,不懂的就不要回答
A:studied C:have studied 请分析两者的区别 为什么选 或为什么不选
A:what's the matter with you?You look so pale.
选A,如果用来与现在时间没有联系的确定的时间短语,要一般过去时或过去进行体.
eg:"You look tired."--"yes,I was working non-stop utill seven o'clock."
"You look tired."--"yes,I've been working non-stop all day."
(参考新编英语语法教程)在此处它而没有使用现在完成时而是现在进行时或过去进行体.
11.10 比较过去时与现在完成时
1)过去时表示过去某时发生的动作或单纯叙述过去的事情,强调动作;现在完成时为过去发生的,强调过去的事情对现在的影响,强调的是影响.
2)过去时常与具体的时间状语连用,而现在完成时通常与模糊的时间状语连用,或无时间状语.
一般过去时的时间状语:
yesterday,last week,…ago,in1980,in October,just now,具体的时间状语
共同的时间状语:
this morning,tonight,this April,now,once,before,already,recently,lately
现在完成时的时间状语
for,since,so far,ever,never,just,yet,till / until,up to now,in past years,always,
不确定的时间状语
3)现在完成时可表示持续到现在的动作或状态,动词一般是延续性的,如live,teach,learn,work,study,know.
过去时常用的非持续性动词有come,go,leave,start,die,finish,become,get married等.
举例:
I saw this film yesterday.
(强调看的动作发生过了.)
I have seen this film.
(强调对现在的影响,电影的内容已经知道了.)
Why did you get up so early?
(强调起床的动作已发生过了.)
Who hasn't handed in his paper?
(强调有卷子,可能为不公平竞争.)
She has returned from Paris.
她已从巴黎回来了.
She returned yesterday.
她是昨天回来了.
He has been in the League for three years.
(在团内的状态可延续)
He has been a League member for three years.
(是团员的状态可持续)
He joined the League three years ago.
( 三年前入团,joined为短暂行为.)
I have finished my homework now.
---Will somebody go and get Dr.White?
---He's already been sent for.
句子中如有过去时的时间副词(如 yesterday,last,week,in 1960)时,不能使用现在完成时,要用过去时.
(错)Tom has written a letter to his parents last night.
(对)Tom wrote a letter to his parents last night.