Sam is frightened to ride a horse.

11. be glad/happy to do sth 高兴去做某事

she is happy to clean the blackboard with me.

be pleased to do sth高兴做某事

she was pleased to help the old man yesterday.

be pleased with sth 对某事感到高兴/满意

the teacher was pleased with my answer.

12. be interested in sth/doing sth 对某事感兴趣/对做某事感兴趣

she is interested in swimming in the river.

My btother is interested in Chinese.

13. be/get ready for/to do sth

Be ready for sth 为某事做好了准备

We are ready for the exam.

Be ready to do sth 为做某事做好了准备

We are ready to have a birthday party for her.

get ready for sth为某事在做准备

We are getting ready for the exam.

get ready for sth 为做某事而做准备

13. be sorry to do sth 对做某事感到抱歉

14. be surprised to do sth 对做某事感到惊奇

be surprised at sth 对某事感到惊奇

15. be worth doing sth 值得做某事（worth 后接动词-ing形式，常考） 16.

开始去做某事

begin to do sth

begin/start to do/doing sth

17. can/be able to afford (to buy) sth 有能力购买（供）……

18. can/may/must do sth could/would/should/might do sth

19. can’t wait to do sth 迫不急待地去做某事

20. decide to do sth 决定去做某事