牛津译林版9A Unit3 Teenage problems reading课件(共37张PPT)
9. I often doubt whether it is worth spending so much time on homework.
doubt vt. 怀疑(在肯定句中一般接if/whether引导的从句;在否定句中接that引导的从句)。
I doubt if he will come tonight.
I don’t doubt that he will win.
worth用形容词,意为 “值得”,可以作表语或后置定语;be (well) worth doing 表示“……(很)值得做”,这里doing为主动形式,被动含义。如:
1)我的汽车值3000美元。
My car ____ _______$3000.
2)这本书很值得一看。