They don't know if it ___ tomorrow. If it ___, they will not go to the park
来源:百度知道 编辑:UC知道 时间:2024/06/28 09:48:46
a. will rain; will rain b. rains; rains
c. rains; will rain d. will rain; rains
为什么选D? 两个if引导有何区别?
c. rains; will rain d. will rain; rains
为什么选D? 两个if引导有何区别?
D
前面的if作“是否"解释,相当于“whether",引导的从句改用什么时态就用什么时态;后面的if作”如果“解释,引导条件状语从句,而条件状语从句中要用一般现在时表将来,所以是rains.
前面的if是表示“是否”,后面的if表示“如果”
所以前面是“他们不知道明天是否会下雨”if it will rain
后面是,如果下雨的话if it rains.
第一个if解释为“是否“,后面一个是”如果“。
宾语从句:是否 条件状语从句:如果
d 第一个是做是否 ,可以用WEATHER代替 ,第二个是条件状语从句的引导词
1 将来时用will
2 假设成功用一般时态。
They don't know if it ___ tomorrow.
他们不知道是否是明天,
if :是不是
If it ___, they will not go to the 。
if引导条件状语从句。
if:如果
If they don't understand something,
Don't go up to lions.They're__________.
求they don't care about us的中文歌词
They don't depend on books这句有语病吗
But they don't a____ with each other
The vegetables smell good,don't they?
they don't care about us有MIDI吗?
they moved away from shanghai.they don't live here_____
But they don't mean to cause any trouble, it is just that they...
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