Verified answer

Only if you want him to teach to a specific person/group. Otherwise the sentence conveys a generality that you (I) just want him to teach piano as an occupation.

Yes it depends on the meaning which you want to convey. Both options are grammatically correct

I want him to teach piano is a generic statement

I want him to teach me piano is a specific statement. Under those circumstances the person ( me ) has to come after " teach "

Hope this helps

Yes and no. If you want him to teach a specific person or people piano then yes. However, if you just want him to teach piano to multiple groups or as a job then no.

The grammatical term is "ellipsis". Ellipsis (plural ellipses) is a mark or series of marks that throughout lots of situations point out an intentional omission of a observe in a text textile. on the tip of a sentence, it shows a trailing off into silence or an unfinished theory. it may additionally seek advice from a pause in speech or a lacking sound. The lacking words or innovations could be provided by the listener or reader and are hence in lots of situations open to different interpretations.