1 and 2
"away" and "off" have different meanings, and "off" will usually need an object (since "off" is a preposition).
My brother pushed me away. <~~This is fine.
My brother pushed me off the deck. <~~includes use of an object
3 and 4 are fine, yes.
5 and 6
I think you mean "walking" in both sentences, right?
There's very little, if any, difference between "to" and "up to" in these sentences.
1. My brother came and pushed me away.
2. My brother came and pushed me off.
[Can we use both 'away' and 'off'? Are both sentences the same in meaning?]
3. What field of study are you interested in?
4. I'm interested in biology.
[Is this answer suitable?]
5. When we were waking around, a foreigner came up to me.
6. When we were waking around, a foreigner came to me.
[What is the difference between 'came to' and 'came up to'?]
1 answer