1.Today the forests have almost gone.People must (be stopped from cutting) down too many trees.括号中为什么不能填be stopped to cu

问题描述:

1.Today the forests have almost gone.People must (be stopped from cutting) down too many trees.括号中为什么不能填be stopped to cut?
2.You'd better give up smoking,(or) you will get ill.括号中为什么不能用and?
3.-Linda,I am very thirsty.
-Let's go to the nearest supermarket (to buy) some drink,OK?
为什么括号中要用不定式?用buy不行吗?

stop from doing sth 是防止----的意思,而stop to do sth 是停下来去做某事的意思.
or 在本句的意思是否则的意思,表示结果.
to buy 的to表示目的哈,所以才会用不定式.