41 be good for 对什么有好处 eg : Reading aloud is good for your English

　　42 be happy to do 很高兴做某事

　　43 be helpful to sb 对某人有好处

　　eg : Reading aloud is helpful to you 大声朗读对你有好处

　　Exercising is helpful to your bady 锻炼对你的身体有好处

　　44 be in good health 身体健康

　　45 be in trouble 处于困难中 eg : She is in trouble They are in tronble

　　46 be interested in 对某方面感兴趣

　　47 be late for = come late to 迟到 eg: Be late for class 上课迟到

　　48 be like 像…… eg : I'm like my mother

　　49 be mad at 生某人的气

　　50 be made from 由……制成(制成以后看不见原材料)