You can use 麻烦 (máfan, to bother; annoying; tricky) as a verb meaning to bother someone.
You can also use it as an adjective to say that someone is annoying, or that something is tricky.
Usually 为 is pronounced with the fourth tone, but in 认为 , it uses the second.
为 | 因为 yīnwèi because 认为 rènwéi believe |
The character 差 also has a few different pronunciations!
差 | 差一刻 chà yíkè a quarter to 时差 shíchā jet lag 出差 chūchāi business trip |