No doubt of/about

No doubt (n) of or about, not for

Don't say: I've no doubt for his ability.

• Say: I've no doubt of (or about) his ability.

Note: Doubtful of

• I am doubtful of his ability to pass.

Divide into parts

Divide into parts, not in parts

Don't say: I divided the cake in four parts.

• Say: I divided the cake into four parts.

Note: A thing may be divided in half or in two

• Paul divided the apple in half (or in two).

Disappointed by/about/at

Disappointed by, about or at, not from

(a) by/at/about

Don't say: Philipa was disappointed from the low mark she got in the test.

• Say: Philipa 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.

Note: Before a person we use with or in, before a thing we use at, about or by and before a gerund we use at:

• Keith is very disappointed at not winning the prize.

We use that (optional before a new clause)

• I was disappointed (that) I didn't get an invitation.

Different from

Different from, not than.

Don't say: My book is different than yours.

• Say: My book is different from yours.

Die of an illness

Die of an illness, not from an illness

Don't say: Many people have died from malaria.

• Say: Many people have died of malaria.

Note: People die of illness, of hungry, of thirst, of or from wounds; from overwork; by violence, by the sword, by pestilence, in battle; for their country, for a cause; through neglect; on the scaffold; at the stake.

Deprive of

Deprive of, not from

Don't say: Nelson Mandela was deprived from his freedom.

• Say: Nelson Mandela was deprived of his freedom.

Depend on/upon

Depend on or upon, not from

Don't say: It depends from her.

• Say: It depends on (or upon) her.

Note: Rely on or upon

• I can't rely on (or upon) him.

Cure of

Cure of, not from

Don't say: The man was cured from his illness.

• Say: The man was cured of his illness.

Note: The noun cure takes for: 

• There is no cure for that disease.

Covered with

Covered with, not by

Don't say: The mountains are covered by snow.

• Say: The mountains are covered with/in snow.

Consist of

Consist of, not from

Don't say: A year consists from twelve months.

• Say: A year consists of twelve months.

Not: Take great care never to use consist in the passive form.