妈妈今天来干嘛英文怎么说

"What is your mother doing here today?" is a way to ask in Engpsh what your mother is doing at the current location.

This question is formed using the present continuous tense of the verb "to do," which is "doing." The word "what" is used as an interrogative pronoun to ask for information about the purpose or reason for the mother's presence. The possessive pronoun "your" is used to indicate that the mother in question belongs to the person asking the question.

Here are some example sentences using this phrase:

"What is your mother doing here today? Is she visiting you?"
"I didn't expect to see your mother here today. What is she doing?"
"Can you tell me what your mother is doing here today? I'm just curious."

In Chinese, this phrase could be translated as: "你妈妈今天来干什么？" (nǐ māma jīntiān lái gàn shénme?)