if/whether引导的从句
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if/whether引导的从句
谁能给我说一下if/whether引导的宾语从句(解释为是否)
它们的时态怎么用?我们老师说用“退步法”谁能给我详细易懂的解释一下?最好有例句。
谢谢!
谁能给我说一下if/whether引导的宾语从句(解释为是否)
它们的时态怎么用?我们老师说用“退步法”谁能给我详细易懂的解释一下?最好有例句。
谢谢!
1.当主句是一般现在时,从句可根据需要用任意时态.
The teacher wants to know if/whether the students are studying in the classroom now.
The teacher wants to know if/whether the students have finished their homework.
The teacher wants to know if/whether the students were playing football yesterday afternoon.
2·主句用过去时,从句用过去时态的一种。
He asked whether /if Tom would come to his party.
The mother wondered whether /if his son had finished his homework.
3·主句用过去时,从句是真理时,只用一般现在时
He asked whether /if the earth goes round the sun.
if,whether在宾语从句中的区别
1.介词后的宾语从句只能用whether引导,不能用if引导.
They are talking about whether they will be paid very soon.
2.whether后可以加or not,但是if不可以.
3. 在不定式前只能用whether.
He doesn't know whether to help her.
The teacher wants to know if/whether the students are studying in the classroom now.
The teacher wants to know if/whether the students have finished their homework.
The teacher wants to know if/whether the students were playing football yesterday afternoon.
2·主句用过去时,从句用过去时态的一种。
He asked whether /if Tom would come to his party.
The mother wondered whether /if his son had finished his homework.
3·主句用过去时,从句是真理时,只用一般现在时
He asked whether /if the earth goes round the sun.
if,whether在宾语从句中的区别
1.介词后的宾语从句只能用whether引导,不能用if引导.
They are talking about whether they will be paid very soon.
2.whether后可以加or not,但是if不可以.
3. 在不定式前只能用whether.
He doesn't know whether to help her.
if、whether引导的从句为真理
whether/if引导的宾语从句
关于whether与If 引导主语从句时的区别
关于If和Whether作为从句引导词的区别
if /whether引导名词性从句的区别?
引导宾语从句的词引导宾语从句的if与whether有什么区别?
用if whether引导的宾语从句中,主句用将来时,从句用什么时态?
if和whether引导表示“是否”的一般疑问句的宾语从句.
英语复合句中的宾语从句的引导词whether是否可以完全替代if?
动词wonder后引导的宾语从句不是得用whether吗?为什么这句话用if?
把下列句子改成以if / whether 引导的宾语从句
请问这里whether 引导的什么从句