1．“Well done!”the teacher patted the shoulder of the student

A: 相当于and he was satisfied; 如果选B,常用来做原因状语.如Being satisfied with what he had done, the teacher praised him in the class.D: 相当于should take,也就是说省略了should这是个宾语从句的虚拟语气经理建议他应该坐飞机去以便及时到那儿开会.

再问： 第2题能解析的更详细些吗？谢谢！不是recommend sb to do sth 吗
再答： 不是的。因为recommend是“推荐”，所以， I would find it difficult to recommend him to do the job. 我发现推荐他做这个工作很难。 recommend后接宾语从句时，类似于suggest（建议），所以，就是谓语用(should可省略）+v 又如： The judge recommended that he serve 20 years in prison. 法官建议判他入狱服刑20年。