If you are a non-native English speaker but studying in an English speaking country, facing problems with language is natural. However, it does not give you extra favor over native English writers from your teachers.
Most probably, your teacher will treat all native and non-native students equally so you better not remain under any misunderstanding.
Instead of seeking extra favor or sympathy, you should try to improve your writing skills to make minimum mistakes. As an alternate option, you can also look for cheap assignment writing service UK for necessary help. In this way, you can save your grades, time and money as well.