حال کامل با since و for

 
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گزارش خرابی

Welcome to another English grammar lesson. This one is about learning the present
perfect tense from past to present, especially when using for and since. Let's say this is you. You have an idea. You want to get a job so you can make some money, maybe buy a car,
travel the world, meet someone, fall in love, get married, buy a house and
have two beautiful children. And then you realize your whole has
life flashed before your eyes and you don't even remember what happened. Wait, what were we talking about? Right. You wanted to get a job. Which means you'll have to go to
an interview where someone will ask you about your job experience, and you'll
have to answer their questions about your experience, often using
the present perfect tense. The interviewer might ask you,
what kind of experience do you have? And you'll say, well I have worked
with computers for ten years, and the interviewer will ask, great! How long have you studied English? And you'll answer, I have studied
it since I was 12 years old. Now let's look more closely at
your answers to the questions. Notice the verbs used in your answers,
have worked, and have studied. This is the present perfect tense, and
it often goes with the word for or since. The present perfect tense connects the
past with the present, and often uses for with a specific amount of time, or
since with the date in the past. When making present perfect tense,
I, you, we, they, goes with have followed by the past
participle of the main verb. He, she, it, goes with has, followed by the past
participle of the main verb. Both parts are needed to make
the present perfect tense. The past participle is the ED ending for
regular verbs, or irregular endings for irregular verbs,
such as written for write. In the sample sentence,
I have worked with computers for 10 years, have goes with the subject I, and
worked is the past participle of work. I have studied it since
I was 12 years old. Again, we use have because
of the subject I, and studied is the past participle of study. Now let's look at a few
other sample sentences. Bill has grown since
the last time I saw him. Bill goes with has and grown is the past
participle of grow, the main verb. You have had a cold for two weeks. You goes with have and had is the past
participle of have, the main verb. And it's perfectly okay
to have both have and had in the same sentence
using the present perfect. Notice that in each of these
sentences we use for or since to describe the amount of
time between the past and present. For 10 years, since I was 12 years old, since the last time I saw him,
for two weeks. For is used to show the length of time,
or how long something happened. For 12 hours, for 2 days,
for 5 weeks, for 8 years. Since is used to show when
the action started at a specific point in time in the past. Since yesterday,
since last year, or last month. Since I talked to you. Since we were away. Since a month ago. Since 1999. Let's practice. Decide if we need FOR or
SINCE in each of the following sentences. And that's the present perfect tense
connecting the past to the present using for and since.

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