题目内容
20.-Do you know if he_______for a picnic with us?-I think he will go if he _______free tomorrow.( )
| A. | goes;is | B. | will go;is | C. | goes;will be | D. | will go;will be |
分析 --你知道他将是否和我们一起去野餐吗?
--我想如果他明天有空的话,他会去的.
解答 答案:B.
根据Do you know if he_______for a picnic with us,这里if引导的是宾语从句,主句用的是一般现在时,所以从句可以用所需要的时态,这里去野餐应该是一个将来的动作,所以从句用一般将来时,由will+动词原形构成;再根据I think he will go if he _______free tomorrow,这里if引导的是条件状语从句,主句用一般将来时,而从句一般用一般现在时.故选B.
点评 英语宾语从句的时态应该和主句的时态保持一致;状语从句的时态与主句有比较紧密的联系,若主句为一般将来时,时间和条件状语从句通常要用一般现在时表示将来,而不能直接使用将来时态.
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