He was astonished at what he found.请问这句话是什么从句,先行词是什么?

I was astonished at he was lost his job 这句话正确吗 He was astonished at what he found.请问这句话是什么从句,先行词是什么? He was _ at what he found.A.assuredB.astonished C.contented D.convinced选?为何? He was astonished at what he found.这句话中的at和what的用法是什么,what和that的区别是什么, He was astonished at what he found.这句的意群怎么划分?说时是在at 之前停顿还是在what之前? he was astonished at what he found这句是宾语从句的疑问句么 还是主语从句啊 不知道怎么区分. he was astonished at what he found．后面的是宾语从句吗?要是我把它改为 what he found was surprising.这时what he found是什么从句？ 高一英语同义句转换、完成句子He was astonished to see the picture.He glared at the picture______ ______My parents_______ ______ ______(面见）with my teacher about my study yesterday. 1.He was so surprised at being discovered that he did not even try to run away.(改为简单句)2.After he was arrested,the man admitted hiding in the box before the plane left London.(改为简单句)3.He was astonished at what he found.(改为简 英语句子成分,he was astonished (to find that,.)括号内的为什么是主补 astonished at怎么连读 everything( )he said at the meeting astonished everybody presentAthat B as Cwhat Dwhich When was he at 句子成分 he was astonished to find that the little black lamb was almost whitehe was astonished是主系表,to find是做什么 that引导的是宾语从句吧 ( ) j he said at the meeting astonished everybody present．( ) he said at the meeting astonished everybody present．A．What B．That C．The fact D． The matter 单选________ he said at the meeting astonished everybody present.________ he said at the meeting astonished everybody present.A.What B.That C.The face D.The matter答：A怎么改就可以选D呢 用所给词适当形式填空What he said at the meeting astonished everybody ___( present) The whole world __________ at the accident of 911 happened in America.A. was astonished B. were astonished C. was astonishing D. were astonishing为什么用单数,全世界的人震惊,应该用复数啊?