1．“Well done!”the teacher patted the shoulder of the student,with a smile on his face.

答

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.

第2题能解析的更详细些吗？谢谢！不是recommend sb to do sth 吗不是的。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 *.法官建议判他入狱服刑20年。