گرامر : اسم مصدر/مصدر با to                      

Gerund /Infinitive

Geround اسم مصدر اسمی است که از فعل مشتق شده و برای ساختن آن بعد از قسمت اول فعل از  ing استفاده می کنیم.

1-اسم مصدر میتواند جایگزین فاعل شود

Learning English is easy

2-اسم مصدر می تواند جایگزین مفعول جمله شود

I like swimming

3-بعد از حرف اضافه اسم مصدر به کار می رود

Ali is interested in playing football

Verb + 'ing' OR Verb + Infinitive

When two verbs are used together, the second verb is often in the gerund form (-ing) or the infinitive. There are no specific rules concerning which verbs take which form. Like irregular verbs, you will need to learn which form a verb takes.

Common Verbs + 'ing

go
enjoy

finish

  keep 

discuss

mind
can't stand
suggest

Examples

They go jogging on Saturdays.
I don't mind helping you.
They can't stand driving in traffic jams

بعد از بعضی افعال مصدر باto به کار می رود

Common Verbs + Infinitive

promise
plan
refuse
want
need
decide
hope

Examples

I promised to help him.
Alice needs to start that task.
He decided to quit his job