If translated into Chinese word for word, both sentences mean "Does this bus go to the library?"
However, the first sentence is the normal state of action, which means asking if this bus always goes to the library (is it a special bus to the library).
The second sentence only describes the car and asks if the current car refers to the library.
Usage: For example, if you are waiting at a bus stop, you should use the first sentence. If you are hitchhiking, you should use the second sentence. 10, correct. But the meaning is different.
Does this bus go to the library? Is the job of this car to drive to the library? In other words, unlike other bus routes, this bus goes to the library.
Does this bus go to the library? The question is whether this bus goes to the library now. Maybe it's not the work of this car, maybe it's just on the way or something. ... 0, please answer two sentences in English.
Does this bus go to the library? Does this bus go to the library?
Are these two sentences correct? And how to use these two sentences.