小學英語動詞用法（七）

　　13. be worth doing  值得做某事

　　He‘ll probably say no， though it’s worth trying. 他很可能不同意，但不妨去試探一下。

　　14. spend…doing花費...做某事

　　How much time do you spend practicing English every day？ 你每天花多少時間練習英文？

　　15. while/when doing

　　I like to listen to music while running. 我喜歡一邊跑步，一邊聽音樂。

　　16. have a good time/fun/problems/trouble/difficulty doing 做某事有樂趣/問題/麻煩/困難

　　I have difficulty remembering names. 我不易記住人名。

　　17. prevent/stop/keep…from doing阻止...做某事

　　Nothing can prevent him from going. 什么都不能阻止他前往。