to hit a good drop shot one needs a good slice or underspin shot. a drop shot is really nothing more than an underspin shot that lands short or close to the net.
要放好小球需要有好的切削球或下旋球技术。 小球只是离网更近更短的下旋球。
we also use this backhand volley motion on slice or underspin backhand hit from the baseline. the only difference here is the body is more involved with rotation and the backswing is larger.