- সঠিক উত্তর হবে, On
Preposition:
- A preposition is a word which is used before a noun, pronoun, or noun phrase to express its relationship with some other word in the sentence.
- অর্থাৎ হল এমন শব্দ যা কোন বা এর আগে বসে তার সাথে বাক্যস্থিত অন্য কোন শব্দের সম্পর্ক প্রকাশ করে।
বহুল ব্যবহৃত কয়েকটি preposition হল:
at, on, of, off, after, from , upon, behind, along, before , between, beside, about, beyond ইত্যাদি।
এবার চলুন দেখে নেই, Preposition 'On' এর কয়েকটি ব্যবহার:
On condition:
'On condition' is used to establish something that must be done in order for something else to happen. 'On condition' can be used in place of 'if'. For example:
- We'll send our daughter to Europe this summer on condition that she gets good grades this semester.
- On condition that you finish this assignment, I will let you stay out late on Saturday.
On for places:
'On' is used flat surfaces both big and small. Example:
- We played football on the field.
- The book is on the table over there.
'On' is used with planets. The most common usage is 'on earth', but other planets take 'on' as well. Example:
You will find a wide variety of life on earth.
So far, life has not been discovered on Saturn.
On Time vs In Time
'On time' means that you have arrived somewhere at the agreed upon time. 'In time' indicates that you have done something within the appropriate amount of time.
I arrived at the meeting on time. vs. I finished the report in time for the meeting.
She picked us up at the airport on time. vs. Janice gave her recommendations in time for us to make an informed decision.
উপরোক্ত তিনটি ক্ষেত্র ছাড়াও On এর আরো নানাবিধ ব্যবহার আছে। যেকোন গ্রামার বই ভালো ভাবে অনুশীলন করলে এ সংক্রান্ত বিষয়ে আরো জানা যাবে।
Source: Essential Grammar in Use by Raymond Murphy & CLIFFS TOEFL