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?
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?
答
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，所以才会用不定式
答
被动必加FROM,OR是否则的意思，用buy不合适！
答
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.