We often leave out the relative pronoun when

We often leave out the relative pronoun when it is the object of the verb: They’re the people she met at Jon’s party. Here are some cells the researcher has identified.

The relative pronoun can only be omitted when it is the object of the clause. When the relative pronoun is the subject of the clause, it cannot be omitted: You can usually tell when a relative pronoun is the object of the clause because it is followed by another subject + verb. In the first sentence the relative pronoun cannot be ommitted because it is the subject of the relative clause ("the woman spoke"). In the second sentence, the pronoun can be omitted because "the woman" is the object of the verb "loved". Noun, subject of the main clause Relative pronoun Verb + rest of relative clause Verb + rest of main clause The woman that spoke at the meeting was very knowledgeable. The woman (that) the man loved was living in New York.

Who/which/ that нельзя опустить, смысл изменится. В таких случаях стоит запятая.

It is the first time + that It is the first time that I make such a mistake.

Дз

1. I don’t want to fly on a plane who/which/what is older than me. 2. Russian is very difficult because of all the exceptions who/which/what have to be learnt. 3. That boy, who/which/he is 5, is my brother. 4. They will go to the school, that/which/what the parents hope will be close to home. 5. He is flying in a machine, in other words, in who/which/what we call a plane nowadays. 6. It will be the first time when/where/that they will be able to work on their own. Дз