彼が成功するか否かは、彼の努力次第である。の英語

Whether he will succeed or not depends on his efforts.

His success depends on the work he puts in.

Whether he succeeds or not is up to his effort.

His success depends on his efforts.

His success is contingent upon his efforts.

It is certain that he will be successful.

That he will succeed is certain.

I doubt if he will succeed

It is doubtful whether he will succeed or not.

His effort is unserious, and will not lead to success.

I doubt he will succeed

I doubt whether he will succeed or not

I doubt of his success

I am doubtful of his success

I have some doubts as to his success.

It is certain that he will succeed.

Whether he'll succeed or not depends on his health.

Whether he will succeed or not depends upon his health.

I hope that he will succeed.

I took it for granted that he would succeed.

He is doing his utmost―straining every nerve―to succeed.

Whether he'll succeed or not depends on his health.

Whether he will succeed or not depends upon his health.

I have no doubt that he will succeed.

I hope that he will succeed.

There is little doubt as to whether he will succeed or not.

I doubt if he will succeed

I am doubtful of his success.

What wonder that he should succeed!

He'll succeed for sure.