GUIDE深度 · Deep dive
Passive, Relative Clauses, Gerund/Infinitive
Passive is be + past participle, with tense on be. Relative clauses use who/whose for people, which/that for things, where for places. Gerund or infinitive depends on the preceding verb: enjoy doing, want to do.
Passive/relative
The house was built in 2020.
The man who lives next door is a doctor.
The book which I bought is expensive.
Verb patterns
enjoy/mind/avoid + doing.
want/decide/hope + to do.
FAQ
When is passive used?
When the doer is unimportant or unknown.
that vs which?
Both are common in defining clauses; use which in non-defining clauses.