For example, when you are writing an essay, how would you know whether to put this rule in here and that rule there and sometimes I get/got confuse(d) whether to use past or present tense for the sentence. The underline words above is a good example of my confusion. I never feel troubled by this before but nowadays, i feel like my language capability is getting worse. It feels like I’m becoming dumb day by day…
Basically, you have to decide what tense you are going to write in for a single piece of writing, and stick with it. Choose how you are going to follow rules, and be consistent with it. Consistency in grammar is key.