就拿needin need of 举例.
意思是一样的,都表示"需要",在语气上need显的较生硬而in need of则有较为生动的表达效果.在写作上in need of要比need合适.两者最大的区别是在语法的应用上.need有实意动词和情态动词两种用法,你所问的属于实意动词范畴.做实意动词时need为及物动词,可以直接做动词不定式做宾语表主动,接动名词表被动.而in need of为介词短语,在句子中做表语成分,要跟在系动词后,后面一般接名词或动名词做宾语.
例句:他需要好好休息.
He need to have a good rest.
He is in need of having a good rest.
还不明白的话就查字典或问问老师吧.