hesitate的两个词组区别hesitate to do sth.hesitate in doing sth.区别?

hesitate的两个词组区别hesitate to do sth.hesitate in doing sth.区别? hesitate at doing与hesutste to do的区别? hesitate to do 和hesitate doing有什么区别? good luck & good lucky这两个词组的区别 两个英语词组的区别 study of 和study on 这两个词组用法的区别Consisted ofmake from 我想问一个这两个词组怎么用有什么区别? 两个词组的意思 求两个英语词组的区别CERTIFICATION OF COMPLIANCE 和 CERTIFICIATE OF COMPLIENCE 的区别? 英语两个词组的区别long ago和long before 的区别 两个英语词组的区别~just now和right now的区别 job-hopping 和job-switching的区别这两个词组的区别 两个词组的区别be sure of 以及be sure about有什么区别呢? 关于Informal.English.and.formal.English要英文的,两个词组的区别,还有距离说明. due to 和 owing to的区别这两个词组的共同点和不同点是什么.. give－up与give－up－on两个词组之间的区别 判断两个汉语词组的区别“唯一重要,不应缺少”和“非常重要,不可或缺” as .as possible和 as .as sb can区别?这两个词组的不同之处,谢谢. 两个英语词组的区别be made of和be made from