Hi everyone, welcome back to Aze IT Studio post. Today i am going to tell you about Present Perfect Tense.

Here we go

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The present perfect tense is really a very interesting tense, and a very useful one. Try not to translate the present perfect tense into your language. Just try to accept the concepts of this tense and learn to "think" present perfect! You will soon learn to like the present perfect tense!

The present perfect tense is a rather important tense in English, but it gives speakers of some languages a difficult time. That is because it uses concepts or ideas that do not exist in those languages. In fact, the structure of present perfect tense is very simple. The problems come with the use of the tense. In addition, there are some differences in usage between British and American English.
In this post we look at the structure and use of present perfect.

Structure :
S + auxiliary verb (have/has) + past participle (V3)

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Contractions with the present perfect tense
When we use the present perfect tense in speaking, we usually contract the subject and auxiliary verb.
We also sometimes do this when we write.
I have = I’ve
You Have = You’ve
He has = He’s
She has = She’s
It has = It’s
John has = John’s
Car has = car’s
We have = We’ve
They have = they’ve
He's or he's? Be careful! The 's contraction is used for the auxiliary verbs have and be. For example, "It's eaten" can mean:
It has eaten. [present perfect tense, active voice]
It is eaten. [present tense, passive voice]
It is usually clear from the context.  
Here are some examples:
I've finished my work.
John's seen ET.
They've gone home.

How do we use the Present Perfect Tense?
This tense is called the present perfect tense. There is always a connection with the past and with the
present. There are basically three uses for the present perfect tense:
1. experience
2. change
3. continuing situation

1. Present perfect tense for experience
We often use the present perfect tense to talk about experience from the past. We are not interested in when you did something. We only want to know if you did it:
e.g : He has lived in Jakarta
Connection with past: the event was in the past.
Connection with present: in my head, now, I have a memory of the event; I know something about the event; I have experience of it.

2. Present perfect tense for change
We also use the present perfect tense to talk about a change or new information:
e.g : I have bought a car
Connection with past: the past is the opposite of the present.
Connection with present: the present is the opposite of the past.
Americans do not use the present perfect tense so much as British speakers. Americans often use the past tense instead. An American might say "Did you have lunch?", where a British person would say "Have you had lunch?"

3. Present perfect tense for continuing situation
We often use the present perfect tense to talk about a continuing situation. This is a state that started in the past and continues in the present (and will probably continue into the future). This is a state (not an action). We usually use for or since with this structure.
e.g : I have worked here since July.
Connection with past: the situation started in the past.
Connection with present: the situation continues in the present.
For & Since with Present Perfect Tense
We often use for and since with the present perfect tense.
We use for to talk about a period of time—5 minutes, 2 weeks, 6 years.
We use since to talk about a point in past time—9 o'clock, 1st January, Monday.
For can be used with all tenses. Since is usually used with perfect tenses only.

Okay, I think that's all for today's post. See you on the next post.

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