必然会的英文

你好，在主语+be+adj+to do 的这种结构中，不定式做什么成分好多人的意见都不一致。本人认为，最好的解释是：主语补足语，不定式对主语作补充。这一类的句子可以改为主语从句或不定式做主语：That you get it is sure.例如：The question is difficult to answer 即就是：To answer the question is difficult.

当上帝给你关了一扇门,你要相信它会给你开一扇窗。whengodclosesadoor,youhavetobelievethatitwillgiveyouopenawindow.

the application of every new technic in CAD will create great profits. promptness and efficiency in employing these newest technic must promote our technical merit ,working effiency and management,which will bring the enormous economic and social profits