英语不是每个句子都有的成分宾语

关于英语语句中宾语成分的问题
例如I don't know这句口语。或,I have studied for three years.这些句子中的宾语是什么?是不是所有句子都含有主谓宾的成分?

第1个回答  2020-04-22
句子或是主谓宾或是主系表比如 she is beautiful
I don't know 这句是省略了宾语 know(...) 因为I don't know是回答你的提问,因而是自动把宾语忽略掉
I have studied for three years同样也是I have studied (...) for three years 自动忽略