相关知识点: 试题来源: 解析 present perfect tense,past perfect tense现在完成时和过去完成时用法的区别在于,看他们有无两个表过去的时间,若有,就用过去完成时!1.现在完成时表示过去发生某动作从过去一直持续到现在(将来还有可能继续下去)...反馈 收藏 ...
解释以下几个tensepast tense ,past continuous tense ,present perfect tensepast perfect tense尽量不要copy百度的,我都看过了的说. 相关知识点: 试题来源: 解析 一般过去时(Simple Past Tense)(常是这种说法,因为还有past perfect tense 过去完成时)例A:He worked very hard last year.去年他很用功.例B:Mr....
1. 现在完成时用来描述一个从过去开始并持续到现在的事件，可能会继续下去。它通常与时间段“for”或时间点“since”连用。例如：“I have studied English for 3 years.”（我学英语已经三年了。）这里的“studied”表示从过去（三年以前）开始的学习一直持续到现在，并且可能会继续下去。2. 过去完成...
past perfect tense : had/hadn't+pp. e.g.I had finished my work already last night. present perfect tense : have/has/haven't/hasn't+pp. e.g.I have given my homework to Miss Lee already. e.g.May hasn't returned her book yet. *you add 'already' and 'yet'* 看这...
1, switch off 关掉，是一瞬间发生的事，不可以延续，不会从出去之间一直关灯到现在，所以不能用present perfect tense。2, 由于给了I live in New York now.( 我现在住在纽约。），所以我在墨西哥住了许多年，却不能住到现在，不能用现在完成时（present perfect tense) 。3, Before that she ...
The present perfect tense says that an action was completed at a time before the present, and the results or consequences of the action are relevant n
Grammar语法Simple past tense and present perfect tense一般过去时和现在完成时一般过去时和现在完成时之间有一些不There are some differences between the simple past同的地方 。tense and the present perfect tense.· 我们用一般过去时述说过去发生的事。. We use the simple past tense to tell what happened...
意思是我的父母曾经结过婚10年.言下之意即现在已离婚了. 有时候无提到个timing会比较 mon 用 present perfect tense 是因为有个 assumption- 把发生了的动作当作与现在有关. 如果发生了的动作是跟现在无关的话 就须要指明时间才可配合用past tense. 当然这个assumption并不是绝对的 很多时候无指示 ...
教材原文精准译文Simple past tense and present perfect tense一般过去时和现在完成时There are some differences between the simple past一般过去时和现在完成时之间有一些tense and the present perfect tense.区别。TIP We often use these time expressions with the提示 我们经常把这些表示时间的词语simple past ten...
What is the different of past perfect tense and present perfect tense??? (1)Past perfect edufind/english/grammar/Tenses11.cfm The past perfect refers to a time earlier than before now. It is used to make it clear that one event happened before another in the past. It does ...