(to be)/(for being) angry

English as a Second Language English Vocabulary, Grammar and Idioms
1

Q1. What is his reason to be angry?
A1: He has no reason to be angry.
Q2. What is his reason for being angry?
A2: He has no reason for being angry.
Are these questions and answers OK?
Thanks.

2

Q1 sounds a little unnatural
A1 correct
Q2 correct
A2 correct

3

Luschen,
Thanks. Today you have answered my many questions.
Could you please make Q1 as natural using the phrase ‘to be angry’?
Thanks.

4

It’s not natural to use ‘to be’ at all. The question form would be ‘Why is he angry?’