英语六级作文常用句型：对比

　　by contrast,

　　on the contrary,

　　while,

　　whereas,

　　on the other hand,

　　unlike,

　　instead,

　　but,

　　conversely,

　　different from,

　　however,

　　nevertheless,

　　otherwise,

　　whereas,

　　unlike,

　　yet,

　　in contrast.