Gerund and infinitives

[Rida*]

Hi Sir,

I am facing difficulty while writing gerund, I can not understand where a gerund is to be used and where not.
For example,

1-He is afraid to lose his job.
"To lose" is not correct "for losing" is correct.
2-You are justified to say this.
"to justified" is incorrect "in justified" is correct.
3-We aim to supply you the best material.
"To supply" is incorrect "at supplying" is correct.
4-She is good to talk.
"To talk" is incorrect "at talking" is correct.
5-I was eager for pleasing him.
"For pleasing" is incorrect "to please" is correct.

My problem is why these wrong sentences are wrong, will you explain these for me.

Thank you.

[Kitosdad]

1-He is afraid to lose his job.

2-You are justified in saying this.

3-We aim to supply you with the best material.

4-She is good to talk with. She is a good talker.

5-I was eager to please him.

Only number two requires a gerund.
The remainder are used with the "to" form of the verb.
_________________
Keep it simple ... Keep it interesting.

[Hariom4me]

Are
"I am going to play." and "i am going for playing."
same and interchangeable or not.
.
please clear the use of "to +verb" and "for+verb+ing".

thanks.

[Kitosdad]

"I am going to play." and "i am going for playing."

They are NOT interchangeable.

The first shows INTENT.
The second is the Simple Present form.
_________________
Keep it simple ... Keep it interesting.

[Rida*]

Hi Sir,

Will you please tell me where I can use gerund. I don't know exactly that what kind of sentences need gerund. Will you please give me some tips and hints. Thank you Sir.

[Kitosdad]

Good morning Rida.

"I like to swim."
"I like swimming."

"I heard her cry"
"She was crying."

"They love to sing together."
"They are always singing together."

"I heard someone shout."
"Someone was shouting."
_________________
Keep it simple ... Keep it interesting.