2楼的是书面语如果是口语,外国人常用see在口语里即let me see,let us see
要看对象是谁,如果你是发动者,那么就说Let's think about it! 如果你是要求大家去想的话,就可以说,Please,think about it for a while!
Let's think about it.
let me see,let us see