The frightened girl was speechless.

The child looked at the man with frightened eyes.

be frightened to do sth.：因做......而感到害怕、胆怯

e.g. She was frightened to look down from the top of the building.

be frightened that ...：对......感到害怕

e.g. The boy was frightened that he would lose his way.

I'm frightened that I will fail the exams.

frighten：使......受惊吓、害怕

11、rule out：

　　1) 排斥、否决、拒绝考虑 （rule possibility out)(以possibility作宾语）

e.g. We can't rule out the possibility of failure.

That's a possibility that can't be ruled out.

The doctor took an X-ray to rule out the chance of broken bones.

2) 使......不可能

e.g. Father's death ruled out college for him.

The heavy rain ruled out going to the mountain.

* as a rule：通常、一般而言； by rule：according to rule：按规定地； make it a rule to do sth.：习惯做......

12、possibility：可能性

e.g. the possibility of .... / the possibility that ....

Do you think there is any possibility of success / rain / his coming

There is still some possibility that he will recover from the illness.

There is no possibility that it will rain these days.

13、look into：注视......内部；调查；检查

　　e.g. He looked into the room, but saw nobody inside.

　　 Please be patient, I will look into the matter soon.

　　 The Public Security Bureau is looking into the murder

look的其它短语：look about / around四下环顾；朝四周看；

look back (on / upon / to ) 顾；回想 e.g. look back on the good old days；

look down on / upon 俯视；轻视；瞧不起

e.g. Gone are the days when the Chinese people were looked down upon .

look forward to盼望；带着希望等待；

e.g. We're looking forward to the winter vacation/ seeing you；

look out (for)小心；注意、留心......

e.g. Look out ! Here comes the bus .

Please look out for snakes when walking through the jungle.

　　look over了望；越过......看；检查

e.g. A strange man was looking over the wall .

The secretary looked over the letters quickly .

　　look through 通过......看；大略的看一遍；检查

e.g. I have to look through my notebooks for the exam .

　　look upon / on ...as ... 把......看成是；认为......

e.g. He looked upon the old man as his father .

look like看起来象；好象要 e.g. It looks like rain