present perfect vs past simple
Use:
Present perfect: to talk about activities that began in the past and continue now.
I’ve lived in Dammam for six months. (I still live there.)
Present perfect: to talk about events that happened in the past when the time is not important.
I’ve been to Abha. Have you been to Jubail? Yes, I have. / No, I haven’t.
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Use:
Past simple: when dates and details are given, use the past simple.
I went to Abha last summer
time expressions
For, since, yet, and already are all used with the present perfect.
For is used with a period of time.
I’ve lived here for six months.
Since is used to indicate a point at which the period began.
I’ve lived here since January.
Yet and already mean “before now.” Use already between the auxiliary and past participle of the verb in
affirmative sentences and yet at the end of negative sentences. You can use either one in questions,
but already is used to state that something has happened before expected.
I’ve already finished dinner.
I haven’t finished dinner yet.
Have you already eaten? I wanted to invite you out to dinner.
Have you eaten yet?
Ago is used with the past simple tense and it is used to refer to a time in the past.
I met him six years ago.
I had dinner an hour ago.
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