Thanks again, Mr MikeNewYork. The second has become quite clear to me. By the way, can I understand the little difference for the first as:
1. hit her on the arm: emphasized on 'her', who the person was hit and the part being hit was her arm ?
2. hit her arm: only the part being hit ?
Hi Mr. Mike,
Good evening again.
I have some more questions or doubts about 'it' although I realized some of them were of inelegant meanings:
1. hit it off (with)
2. have it off (or away)
3. have it out with
What is the sense or realm of 'it' in the above phrases respectively?