"Caught red-handed"

Caught in the act of doing something wrong such as cheating or stealing.

"Weak at the knees"

If you go weak at the knees, you feel an emotion so strongly that it makes you feel unstable on your feet.

"A matter of life and death"

it's extremely important and it could involve someone's survival.

Die of an illness, not from an illness.

❌ Don't say: Many people have died from malaria.
✔️ Say: Many people have died of malaria.

"No sweat!"

You can say "No sweat!" if someone asks you if you can do something, and you're sure you can do it.

Depend on or upon, not from.

❌ Don't say: It depends from her.
✔️ Say: It depends on (or upon) her.

Divide into parts, not in parts.

❌ Don't say: I divided the cake in four parts.
✔️ Say: I divided the cake into four parts.

Disappointed by, about or at, not from.

(a) by/at/about:

❌ Don't say: Phillipa was disappointed from the low mark she got in the test.
✔️ Say: Phillipa was disappointed by/about/at the low mark she got in the test.

(b) with/in:

❌ Don't say: Jane was disappointed from her son.
✔️ Say: Jane was disappointed with/in her son.

Excuse + -ing.

❌Don't say: Please excuse me to be so late.

✔️Say: Please excuse my being so late. Or Please excuse me for being so late.

Enjoy + -ing.

❌Don't say: I enjoy to play football.

✔️Say: I enjoy playing football.

Avoid + -ing.

❌Don't say: You can't avoid to make mistakes.

✔️Say: You can't avoid making mistakes.

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Different from, not than.

❌ Don't say: My book is different than yours.
✔️ Say: My book is different from yours.

Finish + -ing.

❌Don't say: Have you finished to speak?

✔️Say: Have you finished speaking?

Go on (continue) + -ing.

❌Don't say: The music went on to play all day.

✔️Say: The music went on playing ail day.

Mind (object to) + -ing.

❌Don't say: Would you mind to open the door?

✔️Say: Would you mind opening the door?

Practise + -ing.

❌Don't say: You must practise to speak English.

✔️Say: You must practise speaking English.

Remember + -ing.

❌Don't say: I don't remember to have seen him.

✔️Say: I don't remember seeing him.

Or:

✔️I don't remember having seen him.

Busy+ -ing.

❌Don't say: He was busy to revise the exams.

✔️Say: He was busy revising for the exams.

Risk + -ing.

❌Don't say: We couldn't risk to leave him alone.

✔️Say: We couldn't risk leaving him alone.