Meaning of wèi shén me:
为什么
why?; for what reason?
Nǐ zhīdào tāmen wèishénme chídào ma?
你知道他们为什么迟到吗?
Do you know why they were late?
Nǐ néng gàosu wǒ wèishénme nǐ jīntiān méi lái ma?
你能告诉我为什么你今天没来吗?
Can you tell me why you didn't come today?
Nǐ wèishénme chídào le?
你为什么迟到了?
Why were you late?
Nǐ wèishénme zhème zǎo qǐchuáng?
你为什么这么早起床?
Why did you get up so early?
Nǐ néng gàosu wǒ wèishénme nǐ jīntiān méi lái ma?
你能告诉我为什么你今天没来吗?
Can you tell me why you didn't come today?
Nǐ zhīdào tāmen wèishénme chídào ma?
你知道他们为什么迟到吗?
Do you know why they were late?
Tāmen xiǎng zhīdào nǐ wèishénme gǎibiàn jìhuà.
他们想知道你为什么改变计划。
They want to know for what reason you changed the plan.
Wǒ bù zhīdào tā wèishénme shēngqì.
我不知道他为什么生气。
I do not know for what reason he is angry.

