To Keep on Study

To keep on studying } because yo have used ‘keep’, the verb needs to be progressive.

Yesterday I talked to an American language exchange partner, and he is working in the lab.

Yesterday, I talked to an American language exchange partner, and he is working in a lab. } ‘yesterday’ is a sentence starter, so it should have a comma (,) after and because you have not said a specific lab ‘the lab’ may sound a bit weird.

I haven't talked him a quite long time.

I haven’t talked to him in quite a long time. } because it is ‘him’ you are talking to make sure to put ‘to’ before the word him and because you are talking about the time use ‘in’.

He was way too busy, and I asked the reason why he was so much busy.

He was way too busy, I asked him the reason why he was so busy. } the ‘and’ after the comma is unnecessary, ‘so much’ sounds weird when talking about anything other than an actual amount.

Actually, the group that he belonged was originally four members.

Actually, the group that he belonged to was originally four members

Two of them suddenly quit the job, and went up to a graduation school, then he entered the group.

You shouldn’t start the sentence with this clause because you are carrying on from the previous idea.

But unfortunately, he found his visa already was expired, so he ended up not attending the ceremony in due, Though he could go to India, but he could not come back to America.

This bit should connect in the same sentence as the one before { The Indian man wanted to attend his sister’s
Wedding ceremony, but unfortunately, he found out that his visa had already expired. He ended up not attending the ceremony in time, even though he could go to India, because he could not come back to America.

So that's why he's been so busy that he dad to work overtime every day.

This should be joined to the above sentence { Only two of them had to continue to work for the seven projects, so that’s why he’s been so busy that his dad has to work overtime every day.

And lately a new member joined his group as a trainee, at least, his load of work is much better than before.

You should try to avoid using ‘and’ at the start of a sentence, saying his work load is ‘better’ is unclear so use something like less { Lately, a new member joined his group as a trainee, at least his work load is less than before.

His purpose was to take Mcat exam last year, but for some reason, he got a full-time work in the lab, instead, and began to work there.

The work ‘purpose’ sounds quite formal and is very strong } He needed to take the Mcat exam last year, but for some reason, he got a full-time job in a lab and began to work there.

But I think I cannot give him far too much credit, and it will be a quite long time to recover his loss of the study for Mcat exam.

I think I cannot give him much credit, it will be quite a long time to make up for the loss of studying for the Mcat exam. } ‘recovery’ is mostly used when talking about an injury

I think if he's lost to take Mcat, to go up a graduate school is a one of the solutions.

Quite confusing

He said he would take the Mcat exam in may this year.

Because you are talking about may as a month it needs a capital letter - May

He is not expecting it so much, according to him, an American can take three times in his life.

He is not expecting it so much, according to him, an American can take it three times in their life.

The first time of taking the Mcat exam seems to be a trial, but he said before he would get the best score on the first exam.

The first time taking the Mcat exam seems to be a trial, but he said before that he would get the best score on his first try.

It cannot be helped, he didn't study almost for three months.

It cannot be helped, he didn’t study for almost three months.

Before he got this full time work, he studied for ten hours a day every day.

Before he got his full time job, he studied for ten hours a day, every day.

When I heard he got full-time work, I thought what a stupid guy he became!

When I heard that he got a full-time job, I thought ‘what a stupid guy he has become’. { full time can be either ‘full time’ or ‘full-time’ and ‘work’ is the action but a ‘job’ is the object so you should say full time job, and when quoting something out it in ‘’

, I thought I should persuade him, but I was afraid he didn't realize how fool he was!

how much of a fool he was.

Actually, he's got full-time work already, and it will make the matter worse as a matter of course.

You don’t need to add the last bit ‘as a matter of course’

, and said he lost the motivation to study after he comes back home from work, because he spent so much.

and said he lost the motivation to study after he comes back home from work because he already used so much energy at work.