What is the full form of i'll?

i'll (full form) is I will.

This sentence may have two possible interpretations:

One is to express the future and is a marker for the future tense. In this case, English-speaking countries other than England such as the United States, In New Zealand's standard English, shall means "the future" and has been completely replaced by will. Will can be used with all persons to express "the future", and it is will. In informal style, will is often used with the first person to express "the future", especially 'll is the commonly used shortened form of will/shall, thus further blurring the boundaries between will and shall.

One is to express will. Will means will and can be used for all personal subjects. It does not need to be stressed and can be used in its abbreviated form. Shall means will and is generally applicable to the second and third person subjects. Sentence making:

1. I will go, provided that you go too.?

I will go if you go too.

2. I will leave you now so that you can unpack.?

I will leave you now so that you can unpack.?

I will leave you now so that you can unpack.

3. I will pay nothing under compulsion.?

I will not pay anything under compulsion.

4. As to the author of the book, I will hazard a guess.?

As to the author of the book, I will hazard a guess.

5. I will expose his all lawless actions.

I will expose all his lawless actions.

6. I will never swerve from my declared policy on this matter.