If it weren't for the breath... that darn need for air... just about anyone could learn to swim a beautiful freestyle. This drill, which asks you to connect the shoulder to the breath, can help you establish better rhythm and timing.
Breathing late in freestyle usually means you'll not get the proper amount of oxygen into your lungs. It can also throw off the timing of your stroke. Connecting your cheek to your shoulder to learn an earlier breath can help solve both of these issues.
Make sure you're really extending to feel the connection between your shoulder and breath... face and arm.
臂尽量前伸,脸颊贴紧肩。(可参考稍早前发的肩抓水视频)。某侧划水开始时,脸颊仍紧贴该侧肩,当沉肩划水时,头部随着肩的带动自然转动完成该侧换气。