重点讲解：
1. be due to do sth.
按期，按理该做某事；
eg. The ship was due to sail the following morning.
这艘船定于第二天启航。
eg. The first price increases are due to come into force in July.
第一批提价预计将在7月开始执行。
2. be able to do sth.
能做到…的；
eg. He said he was able to finish it in time.
他说他能够按时完成。
eg. We may not be able to recall this information, but it is all stored in our brains.
我们也许不能回忆起这些信息，但它们却都贮存在我们的脑子里。
3. pass out
分配；分发；
eg. My job was to pass out water to the runners.
我的工作就是递水给跑步的运动员。
eg. We are going to pass out the pamphlets to the members of this group.
我们将把小册子分发给这个小组的成员。