Overview
Idiomatic grammar patterns are fixed or semi-fixed structures that native speakers use naturally but that do not follow predictable grammatical rules. Examples: had better, would rather, no sooner…than, scarcely…when, not to mention, let alone. These patterns must be learned as chunks.
Semi-Modal Idioms
- had betterhad better + base: strong advice — You'd better not be late.
- would ratherwould rather + base: preference — I'd rather you didn't tell her.
- may as wellmay as well / might as well: no better alternative — We may as well start.
- would soonerwould sooner + base: preference (formal) — I'd sooner resign than comply.
Fixed Frame Patterns
- it's timeIt's time + past simple: It's time we left.
- it's worthIt's worth + gerund: It's worth considering all options.
- it's no useIt's no use + gerund: It's no use complaining.
- can't helpcan't help + gerund: She can't help feeling nervous.
Common Mistakes
- ❌ You had better to leave → ✅ had better leave (no 'to')
- ❌ I'd rather you leave (present) → ✅ I'd rather you left (past form for distancing)
- ❌ It's time to leave already (fine) vs It's time we leave → ✅ we left
When to use
Native-like speech
You'd better check the data again before presenting.
C2 writing
It is worth examining the broader implications of this finding.
Professional advice
We may as well address all objections before the vote.
Formal English
I would sooner defer the decision than rush to a poor outcome.