题目内容
17.I'm not sure if it tomorrow.If it ,we won't climb the South Hill.( )| A. | will snow,snows | B. | will snow,will snow | ||
| C. | snows,snows | D. | snows,will snow |
分析 我不确定明天是否下雪.如果下雪,我们将不去爬南山了.
解答 答案:A.根据第一句中if意为"是否"可知,这是一个if引导的宾语从句,主句是一般现在时态,从句的时态要根据时间状语来判断,"tomorrow"是将来的时间,所以应该确定用一般将来时态,结构为will+动词原形,故第一个空填will snow,再根据第二句中if意为"如果"可知这是if引导的条件状语从句,主句是一般将来时态;条件状语从句用一般现在时表将来.该从句的主语为it,在一般现在时中主语为第三人称单数,谓语动词用第三人称单数形式,故第二个空填snows,故选A
点评 本题考查两个方面,做题时首先要注意主句的时态,其次注意从句中if的意思,if表达不同的意思,运用的时态也不同.
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