[Dr.lamyaa]

verb tenses
* simple present tens:
shows habit;indicates what a person does every day,(each year ,everymonth,etc.)
-I eat
-you eat
-she\he eats
-it eats
- we eat
-thy eat
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*present continuous tense
shows action at the moment of speaking ;indicates activity taking place while speaker is speaking.
- I am eating
-you are eating
-she\he is eating
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*present perfect tense
indicate an action which started at some indefinite time in the past and is not completed ; the importance of the action continues to the present and may even happen in the future ;some words that signal the present perfect or present perfect continuous are since and for ,already and yet .
- i have studied
-you have studied
-she\he has studied
-it has studied
-we have studied
-they have studied
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*present perfect continuous tense
has the same intent as simple present perfect but with emphasis on action \duration of an action.
-i have been studying
-you have been studying
-she\he has been studying
-it has been studying
-we have been studying
-they have been studying
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