Are these three sentences correct? The answer is they could do with a bit of tweaking. But well done for the capital letters and full stops in the right places.
[Not a teacher]I have a friend who works as a manager in HSBC. Everyone admires him for he is successful in his business career All good grammatically, but it is a little formal. I might have written it as "Everyone admires him for his successful career" or "He is (widely) admired for..."; I for one, think that using the passive voice is better, as it eliminates the assumption that everyone admires him. . But one day, he told me that the only reason he worked in HSBC was (because of) his high salary.
Student or Learner