重点讲解：
1. damn it
（表示愤怒或不耐烦）该死，可恶；
eg. Don't be flippant, damn it! This is serious.
别不当回事，该死！这可不是闹着玩儿的事。
eg. Damn it! I forgot to turn off the gas.
该死！我忘了关煤气。
2. go ahead
继续；
eg. Go ahead and do what you like.
去吧，喜欢干什么就干什么。
eg. Go ahead and cry. Don't hold it in.
只管哭吧。别忍着。
3. that's it
对，是这样（表示同意、赞许）；
eg. 'You got married, right?' — 'Yeah, that's it.'
“你结婚了吧？”——“嗯，结了。”
eg. That's it, plain and simple.
就是这样，简单又明了。
4. open up
张开；展开；
eg. Make sure you open up your arms and stand upright with a smile on your face.
请确保你张开双臂，垂直站立，并保持笑容。
eg. It suddenly occurred to him to open up the box.
他突然想到打开箱子看看。
5. how about
（用于提出建议或邀请）怎么样好吗；
eg. How about going to a concert?
去听音乐会如何？
eg. How about going to France for our holidays?
咱们到法国去度假好吗？