5. They are cheaper than usual.
它們比平常便宜些。
還能這樣說：
They are sold in lower price than usual.
The price is less than usual.
應用解析：
as usual 如往常一樣，照例

6. Today, I'd like to show you something which I'm sure you'll find interesting.
今天我要向你們展示一些東西，我相信你們會感興趣的。
還能這樣說：
Today, I will show you something which you must feel interested in.
I will display you something which may attract you today.
應用解析：
There is something in the wind.
好像要發生什么事了。

7. This is sold by set, not by piece.
這是按套出售的，單件不賣。
還能這樣說：
We don't sell the single product.
It is sold by set instead of by piece.
應用解析：
give sb. piece of one's mind 責備某人；
pick theory to pieces 把某理論貶得一錢不值

8. We've only had three orders all morning!
我們一上午僅接到3份訂單！
還能這樣說：
Only three orders come to us in the morning.
All morning we only receive three orders.
應用解析：
advance in close order 以密集隊形前進；
in good order 情況正常；有條不紊；
large order 難以滿足的要求