Breakdown of tā búhuì zhuǎnzhàng.
Questions & Answers about tā búhuì zhuǎnzhàng.
This is a very common Mandarin tone change rule.
不 is normally fourth tone: bù.
But when 不 comes before another fourth-tone syllable, it changes to second tone.
- 不
- 会
- 会 is fourth tone: huì
- So 不 becomes bú
That is why you say búhuì, not bùhuì.
In this sentence, 会 means to know how to or to be able to because of having learned a skill.
So 不会转账 means:
- he doesn’t know how to transfer money
- he can’t do a bank transfer because he lacks the know-how
This is different from some other meanings of 会, such as:
- will in the future: 他会来 = he will come
- be likely to: 会下雨 = it may rain / it’s likely to rain
Here, because 会 is followed by the action 转账, it most naturally means know how to do.