Question

what is the actucal meaning of hum......hu.....,Er......... and wht typ of sentence we hve 2 use

Answer 1

These are very informal phrases. They are more likely things that you will not write or type, but something you might say, even in your native language.

Sometimes, instead of saying, "what?" you can say "huh?" But I would only say that to a good friend or a sibling. It is not very respectful.

When you give a speech and you are not very good at public speaking, you might fill your awkward pauses with "um..." or "er..."