whatever 在下面的句子起什么作用,没有这个单词,该句子还能成立吗?

Question

Many wild animals are in danger,and it's time for us to do whatever we can to protect them 这句话中 whatever 主要是什么作用,在句子中充当什么成分

Answer 1

答：whatever 在这句话中 既用作宾语从句的引导词，又是在宾语从句中作及物动词do的宾语。whatever 此时是不能省略的，省略了，句子就缺少成分，就讲不通了。即：Many wild animals are in danger,and it's time for us to do whatever we can（do） to protect them。

Answer 2

it's time for us to do whatever we can to protect them.
it 是形式主语，to 后面是句子为句中真正主语，
whatever是连词，引导宾语从句，在句中做宾语
句子可转换为we can do whatever to protect them
希望我的解答对你有帮助，O(∩_∩)O谢谢本回答被提问者采纳

Answer 3

1.whatever在本句中是一个连接词，跟在及物动词后，引导的是宾语从句。宾语从句的情态动词can后省略了实义动词do, 因为主句里面有实义动词do, 避免重复实习省略。连词whatever做省略的动词do的宾语。what表示“什么”，whatever表示“无论什么”，在名词性从句中与what用法一致，只是语气更强。
2. whatever还可以引导让步状语从句，这时可以与no matter what互换。
whatever he said in the past, nobody listened to it.
No matter what he said in the past, nobody listened to it.
类似可以互换连词的让步状语从句。
However clever he is, no one likes him
No matter how clever he is, no one likes him.