n. 投诉；意见；抱怨
e.g. If you have a complaint you should tell me outright.
如果你有不满意的事，你应该坦白对我说。complaining
adj. 诉苦的，抱怨的
e.g. He is a habitually complaining and irritable person.
他是一个爱发牢骚且容易被激怒的人。
fully booked
no free appointment to be had 全被订满，预订完了
e.g. The flight is fully booked.
这次航班的票已全部预订完了。
We are fully booked for all types of rooms on that night.
那天晚上各种房型都预约满了。
available
adj. to be had 可以得到的，可以买到的
e.g. We have a single room available.
我们有一间单人房间可以租（给你）。
All our products are available by mail order.
我们的商品都可以邮购。
availability
n. 有效；有益；可利用性；可得到的东西（或人）
e.g. Before travelling we must ensure the availability of petrol
and oil.
旅行前，我们必须确保能够买到汽油和机油。
3.2 Explanation of important sentences.
John had just finished his ice cream when he felt a pain in his mouth.: No sooner had John finished his ice cream than he felt a terrible toothache.
had just done … when:
no sooner had … than…
e.g. She had just finished when someone knocked at the front door.
她刚准备就绪，就听到了一阵敲门声。
4．Exercises
4.1 Directions: Look up these words or expressions in a dictionary. appointment 约定；预约available 可获得的；可用的
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