Question

—Where did you get this book?—I picked it up from a second-hand bookshop if you ______ know. .

—Where did you get this book?—I picked it up from a second-hand bookshop if you ______ know. A．must B．will C．can D．shall

Answer 1

A

试题分析：A. must必须，一定             B. will将要    C. can能够  D. shall将要；句意：你从哪里得到这本书的？如果你一定要知道的话，我是从二手书店买的。故选A 点评：情态动词是高考的必考语言点。情态动词表必要性时用must(必须)与don’t have to / needn’t(不必要)；表推测时用must (肯定、一定)与 can’t/couldn’t (不可能)；表请求和许可时can/may(可以、能够)与can’t/mustn’t(禁止、不许)。shall多用于法律条文中，表示必须。