13．The school rules state that no child _______ be allowed out of the school during the day unless they are with an adult．（　　）
A．shallB．willC．needD．might

分析 學(xué)校規(guī)章規(guī)定：除非有成年人陪同，否則孩子們在校期間不能出學(xué)校．

解答 答案是A．
考查情態(tài)動詞，根據(jù)句意：學(xué)校規(guī)章規(guī)定除非有成年人陪同，否則孩子們在校期間不能出學(xué)校． shall用在此表示按法律、條約、規(guī)章等必須履行的義務(wù)．所以答案選A．

點評 本題考查情態(tài)動詞的用法．情態(tài)動詞本身有一定的詞義，但是不能獨立作謂語，只能和行為動詞一起構(gòu)成謂語．情態(tài)動詞用在行為動詞前，表示說話人對這一動作或狀態(tài)的看法或主觀設(shè)想．所以在做題時應(yīng)該把握好說話人的情感態(tài)度．

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