mary used to heavy,but now she is thim是什么意思?
问题描述：
mary used to heavy,but now she is thim是什么意思?
答
Mary used to be heavy,but now she is thin.(to后少了个be动词)
used to 过去是...,过去常常...
玛丽过去很胖,但是现在她很瘦.