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一般过去时 simple past 和现在完成时 present perfect 是英语里经常被混合使用的两个时态,它们的基本区别在于一般过去时说明的是过去某一时间里发生了什么或做了什么;而现在完成时则强调过去发生的事情或动作对现在产生的影响或造成的结果。 网友Terry 提出的问题里使用的两个句子就很能说明问题。第一句 "I did my...
1 Present perfect or past simple when it is used with time adverb 0 Present perfect simple tense in conditionals 0 a finished activity in the recent past - present perfect simple vs present perfect continuous 0 Why present perfect tense\past tense is used in these sentences? 1 "Ago" ...
I have been doing some exercises on Past Simple vs Present Perfect as that's the topic that gives me the most troubles... and I can't comprehend why this sentence is correct? "How did you get in ... present-perfect simple-past ...
现在完成时present perfect simple现在完成的动作 过去完成时past perfect simple 过去已经完成的动作
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 ...
Download this explanation in PDF. We use both of these tenses for finished and unfinished actions. The present perfect simple can be used (often with 'since' and 'for') to talk about unfinished actions that started in the past and are still true in the present. It's often used with sta...
Simple past and present perfect一般过去时和现在完成时TIP提示We often use these words with the present perfecttense.我们经常把这些词语和现在完成时连用。justalreadyuptonnωw刚刚已经到目前为止until/till nowever(not)yet直到现在曾经还(没有)so farrecently迄今为止最近TenseUsed forExample时态用于例子actions...
Test yourself on the differences between present continuous, simple past, present perfect continuous, and past perfect continuous.