Question

急~! 两道英语题

1. It is necessary that he ( ) sent there at once.
A be B is
答案：A

2. Tom was thrilled ( ) captain of our school football team.
A. to have been chosen B to be chosen
答案：A

请详细解释一下～！

Answer 1

1.A
It is necessary that sb. (should) do sth. 句型意思是：做……多某人来说很有必要。动词要用原型
2.A
助动词用was说明是已经发生的事情，汤姆对于被选为足球队长一事感到很激动。A的意思是已经被选作……
而B则表示将要被选作……不符合整个句子的时态。

Answer 2

第一题，it is necessary that (should )do ,省去了should 用动词原型.
第二题，tom 被选作对长是过去的事，对现在完成了一定的影响，所以选A.