I would like to ask you some information about phrasal verbs. I know that it is necessary to know them but there are so many phrasal verbs.
Can you advise me how to learn them (by heart or in the sentences).
Thank you very much for your answer.
Here's my advice: don't learn phrasal verbs, learn vocabulary. The worst thing you can do is try to study phrasal verbs separately from other words. There's no point. Just learn what you need to say. If you want to say what time you left your bed in the morning, you need to know the phrasal verb 'get up': "I got up at 7 o'clock this morning".
One excellent way to improve your vocabulary is through reading – lots and lots of reading. In fact, reading has been shown in studies to be 10 times more effective than traditional vocabulary teaching. and 10 times faster than any other typical approach to increasing your vocabulary (flash cards, computer programs..etc).
Hope this helps