be动词+形容词（高矮胖瘦） be动词+名词（人/物） be动词+介词（at/in/for/form)
问题描述：
be动词+形容词（高矮胖瘦） be动词+名词（人/物） be动词+介词（at/in/for/form)
答
1 sb is tall/short/fat/slim
2 He is my teacher.
This is my book.
3 My father is at work.
I am in class 5 ,grade 9.
I am for you.我支持你.
4 I am from China.