Question 1

What is the difference between by accident and by mistake?

Accepted Answer

"By accident" means something happened unintentionally, often because of chance or bad luck: "I spilt coffee on my shirt by accident." The focus is that nobody planned it. "By mistake" means someone made an error, usually by choosing, reading, sending, opening, or deleting the wrong thing: "I sent the email to the wrong person by mistake." The two phrases can overlap, but they are not identical. If the sentence is about an error in judgement or identification, "by mistake" is usually stronger. If it is about an unplanned event, "by accident" is usually better.

Question 2

How do I use on purpose correctly?

Accepted Answer

"On purpose" means intentionally or deliberately. It is the opposite of "by accident" and is often used when someone wants to make responsibility clear: "She left the door unlocked on purpose because she wanted the cat to come in." In negative sentences, it can defend someone: "He did not break the rules on purpose; he simply did not know them." The phrase usually comes after the verb phrase or at the end of the sentence. It is common in everyday English, especially when people talk about blame, jokes, damage, hidden intentions, or actions that were planned rather than accidental.

Question 3

When should I use in vain?

Accepted Answer

Use "in vain" when someone tries to do something, but the effort does not succeed. It often appears after verbs such as try, search, argue, ask, hope, or attempt: "We tried to repair the old computer in vain." The phrase does not simply mean "hard" or "for a long time"; it means the result was unsuccessful. That is why context matters. If someone searches everywhere and finds the missing item, the search was not in vain. If the item is never found, "in vain" is correct. The phrase is useful in stories, reports, and more formal writing.

Manner and Purpose Prepositional Phrases Exercises

Quick Rule

All 20 questions

Continue Practising

Time Phrases

Time Phrases - Advanced

Manner & Purpose - Advanced

-ed vs -ing Adjectives

Conditionals

Present Perfect