John promised his doctor he ________not smoke，and he has never smoked ever since
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John promised his doctor he ________not smoke，and he has never smoked ever since. | A．might | B．should | C．could | D．would |
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答案
| D |
解析
试题分析：考查过去将来时。本题属于宾语从句的时态呼应。主句John promised his doctor中使用过去时，后面的从句也应该使用与过去时有关的时态。句意：John答应医生他不会在抽烟了，从那以后他就再也没有抽过。根据句意使用过去将来时的时态，故D项正确。
点评：当主句中使用过去时的时候，要注意后面的宾语从句要使用相对应的时态，要注意如果后面是客观真理，一定要使用一般现在时。 |
举一反三
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