He always starts the school year off studying and working hard, but he doesn't follow through. [=he doesn't continue to study and work hard]他总是在学期开始时努力学习和工作，但却不能坚持到底。

He doesn't follow his good intentions through. [=although he makes plans to do things, he doesn't actually do them]他不能将良好的愿望付诸实践。

He doesn't follow through on his good intentions.他不能将良好的愿望付诸实践。

We feared they would follow through on/with their threat. [=we feared that they would do what they threatened to do]我们担心他们会将要挟付诸行动。

You should follow through on your backhand.你应在反手击球后做随球动作。

Don't forget to follow through when you putt.击球后别忘了做随球动作。