请用主语（人,物）+be(am.is.are)+表语（名词.形容词）.用肯定,否定.疑问造句

Lisa is the most beautiful girl in our class.
You are dishonest to tell the lie.
Is he the tallest boy in our grade?
望采纳，希望帮到你。

肯定：Tom is a student.
否定：Ben is not shy.
疑问：Is it your pen?