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100

She go to school every day.

She goes to school every day.

100

I has a cat.

I have a cat.

100

He like pizza very much.

He likes pizza very much.

100

They is happy.

They are happy.

100

I can to swim.

I can swim.

200

She is married with a lawyer.

She is married to a lawyer. 

The correct preposition for “married” is to, not “with.”

200

I am agree with your opinion.

I agree with your opinion.

“Agree” does not need “am”; it is a simple present verb.  

200

We didn’t went to the party last night.

We didn’t go to the party last night.

After “didn’t,” always use the base form of the verb.  

200

He has lived here since five years.

He has lived here for five years.

“Since” is used with a point in time; “for” is used with a duration.

200

She can plays the piano very well.

She can play the piano very well.

After modal verbs (can, should, must), use the base form of the verb.  

300

She suggested to go to the museum on Sunday.

She suggested going to the museum on Sunday.

“Suggest” is followed by a gerund, not an infinitive.

300

He is interested on learning French.

He is interested in learning French. 

“Interested” is always followed by in.

300

I wish I can travel more often.

I wish I could travel more often.

“Wish” + present impossible situation uses could or past tense.

300

She didn’t need to came to the meeting.

She didn’t need to come to the meeting.

After “need to,” use the base form of the verb.

300

He has been knowing her for five years.

He has known her for five years.

“Know” is a stative verb; it is not used in continuous tenses.

400

I am looking forward to see you soon.

I am looking forward to seeing you soon.

“Look forward to” must be followed by a gerund (-ing).

400

By the time I arrived, he left already.

By the time I arrived, he had left already.

Use past perfect to show an action completed before another past action.

400

It is said that he is a good teacher, isn’t it?

It is said that he is a good teacher, isn’t he?

Question tags agree with the subject of the main clause, not the verb.

400

I’m used to drive on the left side of the road.

I’m used to driving on the left side of the road.

“Be used to” is followed by a gerund (-ing), not the infinitive.

400

If I will see him, I will tell him the news.

If I see him, I will tell him the news.

In first conditional, “if” + present simple, not “will.”

500

Despite of the rain, we went outside.

Despite the rain, we went outside. 

“Despite” does not take “of.”

500

I suggested him to study harder.

I suggested that he study harder. 

“Suggest” uses subjunctive: “suggest (that) + subject + base verb.”

500

Neither of the students have finished their homework.

Neither of the students has finished their homework.

“Neither” is singular, so verb must be singular.  

500

He acts like he knows everything, isn’t it?

He acts like he knows everything, doesn’t he? 

The auxiliary must match the main clause in question tags.

500

I am used to get up early in the morning.

I am used to getting up early in the morning.

“Used to” + gerund describes habit.  

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