By Present perfect, Perfect progressive

Bokeh wrote: Mister Micawber wrote:In the first case, you are finished thinking; in the second case, you are not.That's not necessarilly true. I have eaten doesn't mean you are still eating; it just means the residual state prevails. Same with thinking.Apples and oranges. You are comparing...

Hello I want to change two post titles: 1) http://www.englishforums.com/English/WhatTheDifference/vmdxh/Post.htm From "What the difference?" To "What's the difference?". 2) http://www.englishforums.com/English/DifferencePresentPerfectProgressive-PastProgressive/vmzhw/Post.htm From "What...

CalifJim wrote:Yes. It disagrees with me.It seems you knew the answer before you asked the question.CJ The website above says there is no difference between Present Perfect & Present Perfect Progressive. How can be?

If to take possible contexts into considerationI was not. There are already miles of threads on the topic, as Kooyeen has already pointed out. Here is one: Post:49154.

Mister Micawber: «In the first case, you are finished thinking; in the second case, you are not.» If to take possible contexts into consideration, I disagree: Past Simple, but he's still thinking (at the moment of speech): 1. I can't solve this problem! I was thinking yesterday at...

Mister Micawber wrote:In the first case, you are finished thinking; in the second case, you are not.That's not necessarilly true. I have eaten doesn't mean you are still eating; it just means the residual state prevails. Same with thinking.

Firstly, I know that it's "What's the difference" not "What the difference", but I just forgot "is", sorry. So Past Progressive & Present Perfect both indicate that somehing has began in the past and has finished. So what's the difference? Thanks

Onh1986 wrote:So what the difference between: - I was thinking. - I have thought.Hi,it is difficult to answer, because you should put verbs in example sentences in order to understand how to use them.I am thinking now. That's what I'm doing now. I'm thinking about my new invention. Please...

So what the difference between: - I was thinking. - I have thought.

But I know that in Past Progressive, there must be two clauses conjuncted by "when" or "while". Is that true?No. I was sitting at my computer all day yesterday.