PHRASAL VERB

 Phrasal verbs are usually two-word phrases

consisting of verb + adverb orverb + preposition. Think of them as you would any other English vocabulary.
Study them as you come across them, rather than trying to memorize many at
once. Use the list below as a reference guide when you find an expression that
you don't recognize. The example sentences will help you understand the
meanings. If you think of each phrasal verb as a separate verb with a specific
meaning, you will be able to remember it more easily. Like many other verbs,
phrasal verbs often have more than one meaning.

Note

The structure of a phrasal verb is:

verb

+

adverb

Phrasal verbs can be:

• transitive (direct object)
• intransitive (no direct object)

Look at these examples of phrasal verbs:

	phrasal verb	meaning	example sentence
				direct object
transitive	put off	postpone	We will have to put off	the meeting.
	turn down	refuse	They turned down	my offer.
intransitive	get up	rise from bed	I don't like to get up.
	break down	cease to function	He was late because his car broke down.

Separable phrasal verbs

When phrasal verbs are transitive (that is, they have a direct object), we can usually separate the two parts. For example, "turn down" is aseparable phrasal verb. We can say: "turn down my offer" or "turn my offer down". Look at these example sentences:

	They turned down my offer.
	They turned my offer down.

However, if the direct object is a pronoun, we have no choice. We mustseparate the phrasal verb and insert the pronoun between the two parts. Look at these examples with the separable phrasal verb "switch on". Note that the last one is impossible:

	John switched on the radio.
	John switched the radio on.
	John switched it on.

Source : https://www.englishclub.com/grammar/verbs-phrasal-verbs.htm