wonder
basic use
The verb wonder is usually used to say that someone thinks about something and tries to guess or understand more about it.
I have been wondering about her strange behaviour.
used with wh-clauses
Wonder is often used with wh-clauses.
I wonder what she looks like.
I wonder which hotel it was.
used with ‘if’ and ‘whether’
Wonder is also used with if or whether. If you wonder if something is true, you ask yourself whether it is true.
He wondered if she remembered him.
He was beginning to wonder whether it had really happened.
Be careful
Don't use a that-clause in sentences like these. Don't say, for example, ‘He wondered that she remembered him’.
Don't use a that-clause in sentences like these. Don't say, for example, ‘He wondered that she remembered him’.
Wonder is sometimes used with if to make an invitation.