I don't know if he will ___(come)back.If he___(come)please tell me答案是will come,comes为什么是I don't know if he will comes?这里为什么要用将来时?还有为什么后面那个if引导的句子又不用将来时了?
来源:学生学帮网 编辑:学帮网 时间:2024/07/01 07:37:03
I don't know if he will ___(come)back.If he___(come)please tell me
答案是will come,comes
为什么是I don't know if he will comes?这里为什么要用将来时?
还有为什么后面那个if引导的句子又不用将来时了?
I don't know if he will 【come】back.If he【comes】,please tell me.
第一个if从句是宾语从句,“他来不来是将来的”,所以用一般将来时;
第二个if从句是条件状语从句,所以用一般现在时表将来.
温馨提示:
条件状语从句和时间状语从句中,动词用一般现在时表将来.
if 在这里有两个不同的意义,前表“是否",后表“如果”
表“是否"的if ,时态根据句子意义来决定;
表“如果”的if ,若主句为将来时,if从句要用一般现在时
此处will后接动词原形,所以填come;后一空的时态跟tell保持一致(用第三人称现在时表示将来发生的动作)。对了,第一个if是是否的意思,连词;第二个if是如果的意思,引导条件状语从句。
这应该是条件状语从句,当然是将来时,因为将来时表猜测,后面那句跟前面相关但是用的是一般现在时,我也不清楚为什么但是你记住就是了,这是一个规则。
I don't know if he ____(be) free tomorrow.
I don't know if he ____ ( come )
I don't know if he will come tomorrow i think he if he free
I don't know if he_.if he _home,please let me know.(return).
I don't know if he ___.if he ____,please tell me .(come)
I don't know if he will come tomorrow.为什么要用if 不能用whether
i really don't know if he _____tomorrow.if he_____,please give me a ring(come)
(w )if i don't know angone?括号里应该填什么?
I don't know if Mr.Green_______(come) tomorrow,but I will let you know if he _____(come) tomorrow
I don't know if he ___(come) tomorrow.If he ____(come),I'll tell him about it
I don't know if he __ to the movie this evening.If he wants,so ___ I.
I don't know ( w ) he will go there or not
英语翻译i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know if i should i don't know
I don't know what he needs
i don't know if he comes next week哪里错了
I don't know if he is ( )class five.括号里填介词
I don’t know ___________ he is well or not.whether/if,为什么?
I don't know if he ( ) If he ( ) .I'll let you know此题考的是什么 答案是will come ; comes为什么