講起介詞by大家會諗到有咩用法呢？可能係描述「交通」方面嘅事，例如go to school by bus，或者用於「被動句」，例如the question is answered by the teacher。咁除咗呢兩個用法之外，究竟by仲可以點用呢？
Please arrive at the examination hall by 9am. If you arrive late, you may not be allowed to take part in the examination.
請在上午 9 點前到達考場，遲到者可能無法參加考試。
The children are reading by the lake.
To me, Mr. Chan is an unfriendly neighbor. He always passes by without greeting.
Mum, can I sleep over at Anna’s house for a night?
That’s fine by me, but you should also get permission from your dad too.
I think my watch has stopped working. What is the time by your watch?
The part-time piano teacher gets paid by the hour.
Please feel free to contact me by email during working hours.
The father holds his daughter firmly by her hand when crossing the road.