Many people complain that English is difficult to grasp because of its grammar.
Helpfully, The Week has written a list of seven grammar rules you really should pay attention to, particularly if you’re writing for public consumption.
2. Bad parallelism
This issue comes up most often in lists, for example: My friend made salsa, guacamole, and brought chips. If you start out by having made cover the first two items, it has to cover subsequent ones as well. To fix, you usually have to do just a little rewriting. Thus, My friend made salsa and guacamole and brought chips to go with them. (Source: The Week)
If you’re having difficulty learning English, there are classes in Calgary you can try.