افعال دو کلمه ای (Phrasal Verbs)
Phrasal Verbs
A number of phrasal verbs are transitive, it means they take an object.
The rules of using them are as follows:
Some phrasal verbs are separable: the verb and the particle can be separated, while others are inseparable and the object must go to the end.
"Look after" is an example of an inseparable verb.
It means to take care of someone or something.
Correct: I look after my brother when he is sick.
Incorrect: I look my brother after when he is sick.
When we use some phrasal verbs with objects we can separate them . We can put the object between the verb and the particle, or we can put the object at the end, the same as in inseparable phrasal verbs.
"Turn on" is a separable verb.
It means switch something on.
Example:
Correct: I turn on the TV, only at nights, to watch the news.
Correct: I turn the TV on, only at nights, to watch the news.
But if you use an objective pronoun it must be always placed between the 2 parts of a phrasal verb if it is separable.
Correct: His students write them down.
Incorrect: His students write down them.