I wonder whether "have trouble in how/whether/what" is correct as listed below.
1. I have trouble in how to say to her.
2. I have trouble in what to say to her.
3. I have trouble in whether to say it to her.
I think they're all correct, but not something normally.
I have trouble in is not good here. You could say 'I have trouble with'.
or 'I don't know . . . .'
1. I don't know how to talk to her.
2. I have trouble with what to say to her.
3. I have trouble with whether to say it to her.
Clive
fire1have trouble
This is normally followed by a verb in -ing form. I suggest "knowing" in this case.
I have trouble knowing ...
... how to tell her.
... what to tell her.
... whether I should tell her.
CJ