1.You' d better tell your plan to your parents.(改为否定句)
问题描述：
1.You' d better tell your plan to your parents.(改为否定句)
2.Three plus eight is eleven.(对eleven提问)
3.You should not make a noise here.（改为祈使句）
答
1、You'd better not tell your plan to your parents.
这里是You'd better not do sth.的用法.
2、What is three plus eight?
3、Don't make a noise here!
不会的还可以问我噢.