The students want to------- We use the elevator to go up and down the tall buildings.为什么student加s,而elevator不加s.

The students want to------- We use the elevator to go up and down the tall buildings.为什么student加s,而elevator不加s.
The students want to------- We use the elevator to go up and down the tall buildings.
为什么student加s,而elevator不加s.

The students want to------- We use the elevator to go up and down the tall buildings.为什么student加s,而elevator不加s.
student一般都用作集体名词.都要加-s. elevator这里特指电梯.我们需要用电梯上下高层建筑

student一般都用作集体名词。都要加-s. elevator这里特指电梯。我们需要用电梯上下高层建筑