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这个when后用一般现在时还是一般将来时

2010-08-10来源:和谐英语

这个when后用一般现在时还是一般将来时

 

请看下面这道时态考题:

—When __________ again?

—I don’t know. But when he __________,I’ll let you know.

A. he comes,comes                                  B. will he come,will come

C. he comes,will come                             D. will he come,comes

【分析】此题应选D。第一句为特殊疑问句(when=何时),根据句意,应用一般将来时态。 第二句为一个含有条件状语从句的主从复合句(when=当……的时候)。按语法规则:在时间状语从句和条件状语从句中,通常要用一般现在时表示将来意义,而不能直接使用将来时态。请做以下选择题:

1. The football match will be put off if it ________.

A. will rain                                                  B. rains

C. rained                                                     D. is raining

2. —Can I join your club,Dad?

—You can when you _________ a bit older.

A. get                                                          B. will get

C. are getting                                               D. will have got

此时要特别注意分清:由when和if引导的从句是状语从句还是宾语从句:

3. 1) I won’t go if it ________ tomorrow. (状语从句)

2) I don’t know if it ________ tomorrow. (宾语从句)

A. rains                                                   B. will rain

C. is raining                                             D. has rained

答案:1. B 2. A 3. 1)A 2)B