Breakdown of Телефон мешает мне засыпать вечером.
Questions & Answers about Телефон мешает мне засыпать вечером.
The verb мешать in this meaning (“to bother, to disturb, to prevent”) takes the dative case for the person who is being disturbed.
- мне = to me (dative)
- меня = me (accusative/genitive)
So the pattern is:
- мешать + кому? + (делать что?)
- Телефон мешает мне засыпать. – The phone keeps me (from) falling asleep.
If you said Телефон мешает меня, that would be ungrammatical in this sense.
- спать = to sleep (the state of being asleep)
- засыпать (here) = to fall asleep (the process of going from awake to asleep)
In this sentence, the idea is that the phone prevents the speaker from falling asleep, not from sleeping in general. So засыпать is the correct choice:
- Телефон мешает мне засыпать. – The phone keeps me from falling asleep.
- Телефон мешает мне спать. – The phone keeps me from sleeping (being asleep).
Both are possible, but they describe slightly different things.