像Be sure to let Tom know the notice这样的句子中sure后的是什么从句

像Be sure to let Tom know the notice这样的句子中sure后的是什么从句 Be sure to let tom know the notice as soon as he_____ A will be sure to let tom know the notice as soon as he 为啥选C make sure how long the class will be的句子结构是什么,是什么从句? sb.be sure that+从句中,从句是什么性质的从句?修饰主句中的那个成分? Be sure +that+从句 结构中that引导的是什么从句? try to sure 的sure是什么词性 make sure,be sure of ,be sure to do,for sure的区别 be sure to do sth...有这样的?sure还能怎样用 be sure to 与 be sure of 的区别 be sure of 与 be sure to的区别 be sure of be sure to do 的区别·