There are a good many advantages of travelling by bike,请问a good many对吗?

There are a good many advantages of travelling by bike,请问a good many对吗?
There are a good many advantages of travelling by bike,请问a good many对吗?

There are a good many advantages of travelling by bike,请问a good many对吗?
There are a good many advantages of travelling by bike是正确的.
a good many后加可数名词复数,表示：“很多,许多,大量的”的意思,如：
a good many apples / people/ boxes/ eggs

不对,
用there are many advantages..就行了

是对的，a good many 意思是“相当多”。
整句意思是：骑自行车出行有很多好处。

对的！意思就是very many的意思