be useful for=什么?

be useful for=什么? be useful to和be useful for的区别 be useful to和be useful for的区别? be useful to sb还是for sb? 请问be useful for sb是不是短语 求英语大手帮小弟解决下困惑in general , to和for在表达对.有什么不同比如be useful for 和be useful to sb 以前课文上有be useful to sb 老师叫我们记住,可刚刚才发现也有be useful for 的求 是be useful for 还是be useful to?对……有用的 I find things like that very useful for my writing.我想请教下问什么that后面没有用be动词? ( )english dictionary you borrow from the library must be useful for your study.kongli填什么填连接词 be useful是什么意思 be more useful是什么意思 看下这句话有什么语法问题没,有的话如何修正,There are a lot of features in this machine that will be very useful for your cleaning . Everything should always be done well by them.always不是应该放在be动词前吗?put it down,Tom.you musn't read anyone else's letter.为什么S不是加在anyone后面?be useful to sb 对某人有用 那有be useful for 有什么区别 类似的 Climate is useful for guessing what the weather will be like in the future翻译 英语填词：The book will be useful for students in higher___（教育） 英语翻译：label must be permanently affixed to garment,legible for useful life of the garment. they will be more useful than what is common for early prototypes. Fire can be very useful