Hi, can someone please explain the difference between those two tenses and when I have to use which?
thx in advance!
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I've never heard of 'present perfect simple and past perfect simple' but 'present perfect and past perfect'. I am expecting any information concerning with this .
With Present perfect simple I mean f. e. has been and the other one had been. Maybe it is called just present perfect and past perfect, I don't know.. never really knew what the name of the tenses are ^^
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Simple present perfect:

e.g. I have worked
have I worked?
I have not worked

1. We use this to say that something in the past is connected with the present:

"Lemon and Jack have learned some grammar" - They learned it in the past, but still know it NOW.

"The company has opened a new office" - the office was opened last week, and people are working in it NOW

2. It is used to talk about things which have happened several times up to the present:

"Lemon has received 16 emails since breakfast"

or about how long present stuations have lasted:


"Jack has always lived in the same house"

3. You will hear it used for giving news of recent events:

"Cardinal Retzinger has been elected Pope"

Simple Past Perfect:

e.g. I had worked

This is used when we are talking about the past, and then want to refer to something that happened even earlier in the past:

"I suddenly realised I HAD WRITTEN to Jack before"

"Lemon told Jack that she HAD READ the previous thread yesterday"

here are some exercises and games using the simple present perfect and the simple past perfect.




I think I understand it now, thx for the explanation abbieEmotion: smile. Just one more question about your first example - Lemon and Jack have learned some grammar: I would have used past tense, would that be wrong or would that just have another meaning? Because you said that they learned it in the past but still know it now, does that mean that if I would use past tense that would mean that they learned it but don't know it now or can it also have the same meaning as present perfect?

(The sites you posted confused me at first because it was something about magic number but I looked around and found the exercises. They were very helpful, thx ^^)
In my last post I wrote a question where I didn't know whether I should put as or like (can it also have the same meaning as present perfect). Do you mind if I ask this question here or shall I make a new thread?

In case it doesn't bother...
I know that you use as like f. e. in this sentence: Eat as much as you can; or like: She is intelligent like my sister; or: Write the sentences as shown below
But in such sentences like this one - can it also have...- I am not sure which one is the right one...

And if it does bother, please tell me, I will immediately make a new threadEmotion: smile
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"Lemon and Jack have learned some grammar" - it was just an example of how you could use the simple present perfect, Lemon.

Of course you can say "They learned some grammar at school", for example, using the simple past. We use simple past to express something which happened in the past, and is now over. "They learned grammar at school" - (they are not learning it now)
But in such sentences as which one, lemon?
Sorry if that wasn't clear... I meant this sentence: Can it also have the same meaning as present perfect.

That's just an example, not a good one though.. the sentence itself seems to me a bit strange XD.. but can't think of another one now... just remembered this problem when I wrote this sentence but I hope you still can help me
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