I have been noticing some consistent mistakes since the first day I started editing. First is the excessive and irrelevant usage of "the"e.g "Based on the current situation of the language service industry": there is no need to use "the" so many times in one sentence especially in such a close spatial proximity.
Another is your unnecessary need to use "kinds" and "types". E.g "various types of teachers", there can be teachers belonging to different fields but I assure you that there is no such thing as different "types" of teachers. In fact this phrase can be taken negatively as being a little rude to be used when referring to human beings until absolutely necessary.
Another is the change of tenses and mood in the same sentence. If you are using future tense in one phrase continue using that, instead of shifting to present tense.
Hope you guys avoid such mistakes in future.