请问老师 last week 只能用于一般过去时态吗this week能用于现在完成时态吗this week是否是个确定时间？
一般过去时和现在完成时
（ 1 ）、一般过去时的谓语动词用过去式,而现在完成时的谓语基本构成是“主语+ have/ has + 动词（V.）的过去分词”.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) 、一般过去时通常与表示过去的时间状语连用.如：yesterday,last week,two years ago,just now,in 2002 等；而现在完成时则常与 just,already,ever,never 等副词和 these days,this week,since .,for . 等表示一段时间的状语连用. 试比较以下几组句子,有什么区别： ① A:Have you seen the film B:Did you see the film 分析：你看过这部电影吗?（ A ）句强调的是被问者对剧情是否了解；（ B ）句强调的是看这部电影的动作是否发生过,并不强调是否知道其内容. ② A:How has he done it B:How did he do it 分析：他是怎么做的这件事?（ A ）句强调的是他做这件事的方式对现在产生了某种影响；（ B ）句单纯的询问做这件事的方式. ③ A:He has lived in Beijing for 8 years . B:He lived in Beijing for 8 years . 分析：他在北京住了 8 年.（ A ）句讲的是到目前为止他在北京住了 8 年,可能还会继续在北京住下去.（ B ）句讲的是他在北京住过 8 年,现在已经不在北京了. （3）现在完成时强调过去发生的动作对现在的影响和结果,而一般过去时与现在没有联系,只是说明某个动作发生的时间是在过去. 比：I have washed the car. 我洗过了车.（看上去很漂亮） I washed the car a moment ago. 我刚才洗过车了. She has watered the flowers. 她已经浇了花.（不需要再浇了） She watered the flowers yesterday. 她昨天浇的花. I have written the letter but I haven't posted it yet. 信我已经写好了,但还没有寄出. I wrote the letter last week and I posted it three days ago. 我上周写的那封信,3天前寄出的. （4）现在完成时表示的动作或状态延续到现在并可能延续下去,而一般过去时则单纯表示过去某段时间内的经历. 比：It has rained for five hours. 雨已经下了5个小时了. It rained for five hours yesterday. 昨天下了5个小时的雨. He has waited for her for two hours. 他等她已经两个小时了. He waited for her two hours and then went home. 他等她等了两个小时,然后就回家了. I have reviewed two lessons this morning. 今天上午我已经复习了两课.（说话时还在上午） I reviewed two lessons this morning. 今天上午我复习了两课.（说话时已是下午或晚上）
时态要根据语境来定。
如以下几种情况，在逻辑上来讲都是说得通的，合理的。
I will buy a bike this week. 将来时。我这周要买辆自行车 （可能是周一说的，周五买）
I am writing a paper this week. 进行时。 我这周在写一篇论文 （正在写，但不知道写完没）
I have completed a paper this week. 现在完成时 （我这周完成了一篇论文）
this week可以用于现在完成时态，可以表示一个确定的时间，也可理解为一个时间段。
例如：We have learnt fifty new words this week.
鄂俩金锁：[答案] last week表示上周,如果表示上周做的某件事情对现在的影响时,也可使用现在完成时. this week可以用于现在完成时态,可以表示一个确定的时间,也可理解为一个时间段. 例如:We have learnt fifty new words this week.
渝中区18164919640： 请问was he absent from school last week能否改成did he absent from school last week? - ？
鄂俩金锁： was he absent from school last week能否改成did he absent from school last week? 不能,但是可以改成:did he absent himself from school last week? 具体原因请仔细看下面: absent的用法 1. 用作形容词,表示“做某事缺席”,其后常接介...
渝中区18164919640： last week l went to the theater.老师甲说这是一句简单句(主谓结构) - ？
鄂俩金锁： 这是主谓宾结构,last week做时间状语,I 做主语,went 作谓语to the theater做介宾短语.望采纳.
渝中区18164919640： 你老师上周忙吗?用英语 - ？
鄂俩金锁： 有多种表达方式,例如:Was your teacherbusy last week? (没有空闲时间) Did your teacher get his hand full last week? (手头工作挤得满满的) Was your teacher on the go last week? (四处奔波)
渝中区18164919640： Is this problem - - - the teacher explained last week?A whichB thatC the oneD one - ？
鄂俩金锁： 先把这个句子还原成陈述句 this problem is ___ the teacher explained last week.很明显,is后面缺一个表语,而这个表语在后面的从句中充当宾语.可以直接用 what ,l来引导这个表语从句which或者是that是不可能引导表语从句的.这个题也可以转换为一个定语从句the one,充当is 的表语,再用that 做引导词,引导定语从句,因为做从句的宾语,所以that 省略了
渝中区18164919640： i visited the Bund last week.划线部分the Bund提问. 请问是用what did 还是where did - ？
鄂俩金锁： what did,visit是及物动词,要用名词性疑问词提问,where是副词性的,后边动词应是不及物的,如,where did you go last week
渝中区18164919640： The teacher, as well as his students - ----- - to attend the party last week. - ？
鄂俩金锁： 答案C 这题考查主谓一致和时态,时间是last week,用过去时,另外主语被as well as连接时,谓语和前面的主语一致,就是the teacher,所以选C.
渝中区18164919640： 高中英语,完形填空 Last week, all the teachers and student - ？
鄂俩金锁： Last week, all the teachers andstudents of our school watched a special performance. The second programme 1(touched) me. The performer was ver...
渝中区18164919640： 给老师的道歉信 英文Suppose you had to miss your english class last week because you represented the university in a debating contest,write your teacher a ... - ？
鄂俩金锁：[答案] Practical Writing-Notes of Apology Monday, March 15 Dear Professor Martin, I enjoy your class very much. But I'm very sorry that I had to miss your class last Thursday. Unfortunately my roommate became ill and I had to take him to the hospital. Please let ...
渝中区18164919640： 填写单词首字母已给~ Last week he went on a school (t ) with his teachers and classmates. - ？
鄂俩金锁： hourtop
