Please set down what the teacher said just now in your note book,是什么句子类型,“what”在句子中的作用?

Please set down what the teacher said just now in your note book,是什么句子类型,“what”在句子中的作用?
Please set down what the teacher said just now in your note book,是什么句子类型,“what”在句子中的作用?

Please set down what the teacher said just now in your note book,是什么句子类型,“what”在句子中的作用?
宾语从句,what就是引导宾语从句的作用,充当set down的宾语.