摘要:例1 He the exam if he harder. A. passes-works B. will pass-works C. will pass-will work D. passes-will work 答案: B 提示: 在英语中.if既能够引导宾语从句.又能够引导状语从句.但要注意主句中的谓语是及物还是不及物动词.此句中pass the exam已经明确表示有宾语.if就是引导状语.主句用一般将来时.从句应用一般现在时. 例2 While she TV, the bell . 答案: was watching,rang 提示: 由while引导的时间状语从句.强调的是正在进行看电视这个动作.门铃响了这动作也发生了.因此从句用进行时态.主句用一般过去时.
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I’m not sure if he ______ the exam. But he will be better if he _____ harder.
| A.passes; will work | B.passes; works |
| C.will pass; will work | D.will pass; works |