What does your uncle ____[say tell] to you.选哪个呀,讲原因

say...
what does your uncle tell you...
tell 后不接 to

tell告诉 tell sb sth/tell sth to sb
say说 say sth to sb
▲ tell常作及物动词，意为“讲述，告诉，动词常跟双宾语。
tell sb sth＝tell sth to sb告诉某人某事。
eg: He is telling the children a story.
他正在给孩子们讲一个故事。
Did you tell her the news?＝Did you tell the news to her?
你把这个消息告诉她了吗？
▲ say一般作及物动词用，着重说话的内容，它的宾语可以是名词，代
词或宾语从句。
eg: He can say his name. 他会说他的名字。
Please say it in English. 请用英语用。
She`s saying ,Don`t draw on the wall.她在说“别在墙上画”。
原句换成陈述句是Your uncle __ what to you. 所以选tell

选tell
tell后面直接加宾语，而what就是tell后的宾语，只不过由于疑问句的原因，将what提到了句首。
这里是个句型：tell sth. to sb.

say
翻译； 你叔叔对你说什么了？
say to sb对某人说
tell sb about sth 告诉某人..某事, 不用to

选say
tell为及物动词,后面直接跟名词或代词
say如果后面要跟对象,则要加to