题目内容
18．If the teacher us any homework tomorrow，we will go bike riding．（ ）| A． | gives | B． | doesn't give． | C． | will give | D． | won't give |
分析 如果老师明天不留作业，我们就去骑自行车．
解答 答案：B 这是一个if引导的条件状语从句，在 if 引导的条件状语从句中，如果从句谈论的是一个有可能发生的事实及其产生的相关的结果，主句用一般将来时态，从句用一般现在时态，本题的主句是we will go bike riding，用的是一般将来时，从句应该用一般现在时，结合句意：如果老师明天不留作业，应该用doesn't give，故选B．
点评 本题考查的是条件状语从句，理解句意并掌握条件状语从句的用法是解答本题的关键．注意主句用一般将来时，从句用一般现在时态．
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