15. On next Monday

• I’ll see you on next Monday. ❌
• I’ll see you next Monday. ✅

Why does this happen?

This mistake happens because students are so used to using “on” with days of the week! After all, we say “on Monday,” “on Tuesday”, so it feels natural to add “on” before “next Monday” too, right?

Well, here’s the thing: words like next, last, this, every, and each already tell us when something happens, so they replace the preposition. The preposition becomes unnecessary.

Examples:

• I’m visiting my parents next weekend. (not on next weekend)
• She started her new job last month. (not in last month)
• Are you free this Friday? (not on this Friday)
• We have meetings every Monday. (not on every Monday)

Prepositions of Time: Overview

Here is an overview of how we use three prepositions of time

 

16. Discuss about

• We need to discuss about the proposal. ❌
• We need to discuss the proposal. ✅

It can be tempting to add “about” after the verb “discuss” but it is not necessary. “Discuss” is a transitive verb – it already includes the meaning of “talk about”.

This mistake often happens because in many languages, you need an extra word (like “about”) after a verb like “discuss”. And students transfer “about” from the verb “to talk”.

Examples:

• Let’s discuss your ideas.
• They discussed the budget in the meeting.
• We need to discuss what happened.
• Can we discuss this later.

17. More better

• This phone is more better than my old one. ❌
• This phone is better than my old one. ✅

This mistake is so common because students are applying the regular comparative rule to an irregular adjective.

Here’s what’s happening in your brain: you’ve learnt that for many long regular adjectives, you add “more” to make comparatives:

• Beautiful => more beautiful
• Expensive => more expensive

But, when we have an irregular comparative adjective (better, worse, less), we cannot use “more”. Like in our example sentence, “better” is already the comparative form of “good”, so adđing “more” is redundant (and incorrect) – it’s like saying “more more good”.

 

Regular comparatives review:

For most adjectives: