Sentence correction

#1 only is correct.

Welcome back, MrM.

Thank you very much gentleman.

regards,

sri

We do not use 'gentleman' in the singular in direct address, Sri.

(Thanks, Avangi.)

well sri the first one is correct and the second one is not because u really cant say cousin brother..it dosnt make sence..i hope u get it
soumaya

soumaya because u really cant say cousin brother..it dosnt make sence..i hope u get it

You can, however, say:
my cousin's brother;
my brother's cousin.

Hi, soumaya -- please use correct words and capitalization when posting here -- "i hope u get it" is not a very good model for students who are trying to improve their English. Thanks!

hi Khoff
well i should have sory but i didnt mean it the way you though..i meant what i taught her i hope she got it because i am not that well in teaching students so maybe she would not understand my meaning.
but thank you for pointing this out
soumaya

There are approximately six small "i's" in your last post. They all serve as the personal pronoun referring to yourself. In correct English, these must all be capitalized.

"I hope she got it," etc.

This is true even when it comes in the middle of the sentence: "I meant what I taught her."

Best wishes, - A.

Hi to all,
The simple anwer is 1.
Because, the subject indicates masculine gender. So, no need to write brother again.
if you want to write word "brother", then you have to change the sentence like
This is my cousin brother.
cheers,
vishwa