重点讲解：
1. go ahead
开始吧；
eg. Go ahead! There's nothing to be afraid of.
干吧！没有什么可怕的。
eg. Go ahead, we are all listening to you.
开始吧，我们都听着呢。
2. think about
想；考虑；思考；
eg. I tried not to think about it. I blacked it out.
我尽量不去想它，竭力要将它忘掉。
eg. Think about how much unnecessary and unrealistic pressure you might be putting on yourself.
想想你给自己施加了多少不必要和不切实际的压力。
3. well done
做得好；
eg. 'Well done,' said Claud in admiration.
“干得太棒了，”克劳德钦佩地说。
eg. 'Daddy! I came second in history' — 'Well done, sweetheart!'
“爸爸！我的历史得了第二名。”——“考得好，亲爱的！”
