let的過去式和過去分詞

Now let me see ─ how old is she now?

讓我想一想，她現在多大了呢？

Let's take the problems in a different order.

咱們換一個順序來處理這些問題吧。

Let's be practical and work out the cost first.

咱們實際一點兒，先計算一下成本費用。

Let's attack one problem at a time.

咱們一次全力處理一個問題。