这四个词都有"惊讶"之意.

1. shock

程度最强.指"震惊", 一般指"令人震惊的坏事".

We are shocked at the news that he had been killed in the car accident.

Everyone was shocked by his diry words.

2. amaze

与astonish 程度较强.amaze 一般指"令人惊讶的好事."; astonish 特指”于遇到不可理解的意外而吃惊."

The film we saw last night really amazed us.

His father was astonished by his son's behaviour.

3.supurise

程度最弱.指由于意外或突然而感到惊讶.

To our surprise , the boy finished the job on time.

这三个词都可以用于这个句式.

be --ed   at           be surprised at     be astonished at     be amazed at