Lets后加Be动词的原形,也就是单词be，例如 Lets be friends；
Let后面加动词原形是固定搭配，lets let us的常用口语形式。
Let's be practical and work out the cost first.
咱们实际一点儿，先计算一下成本费用。
Let's attack one problem at a time.
咱们一次全力处理一个问题。
Next time you're here let's have lunch together.
下次你到这里来，咱们一起吃午饭。
Let's get this show on the road!
咱们这就开始吧！
Come on, you guys, let's get going!
快点，伙计们，咱们走吧！
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