sth+be+adj+to+do造句
问题描述：
sth+be+adj+to+do造句
答
Milk is great to drink.
答
It be adj to do sth 望采纳
答
Milk is great to drink.it is tiring to runningcoke is bad to have
答
这种句式通常是it作形式主语，真正主语为to do...
e.g. It's necessary (for us) to learn English well.
答
Chinese is easy to learn.（汉语容易学.）
English is difficult to learn.（英语难学.）
The chair is comfortable to sit on.（那张椅子坐上去很舒服.）