If you are at a bus stop, and see a bus coming, which version would you say, 1 or 2? I see a bus come. I see a bus coming. If it is #2, then what does #1 mean exactly?

I hear a book fall. I hear a book falling. I hear a fall of a book. Which version is most natural?

"We saw you and him." If I change the above sentence to passive voice, which one of the following would be correct ? "He and you were seen by us." "You and he were seen by us."

I see a bus come. I see a bus coming. When you say I see a bus come, it means the bus has already come, and now stopped at the stand. When you say I see a bus coming, it means the bus is on its way to the stop, progressing. We saw Kim leave the bank. We saw Kim leaving the b...

I recommend you to define those parameters beforehand. I recommend that you define those parameters beforehand. Are both sentences grammatically correct? If yes, do they mean the same thing? If yes, which one should I use?

I've made a couple of edit suggestions on a particular question and commented between them to try to explain, but both edits were rejected by the asker with the custom reason, "Why I need to remove [the] answer?". Is there anything more I can do to fix this?

I’m asking about usage of “refer” and “refer to”. Can one say “refer to the letter”? Is “refer the letter” enough?

Which one is true? He had walked there on foot. or He had gone there on foot. Since 'walk' means 'to move or go somewhere by putting one foot in front of the other on the ground [Oxford Dictionary]', is it true to use it with 'on foot'?