(1)aboard adv.& prep.在(船、飞机、火车等)上；上(船、飞机、火车等)

go aboard上(船、飞机、火车等)

(2)abroad adv.在国外；到国外

go abroad出国

(1)All the passengers aboard fell into the river.

船上所有的乘客都掉入了河中。

(2)As soon as we went aboard，our ship left the port.我们一上船，船就出港了。

(3)Since March 2012，I've done 89 trips-of those,51 have been abroad.自从2012年3月，我进行了89次旅行，其中51次是去国外。

[单句改错]

(4)After graduating from college，the young man went for further education.

settle down坐下；定居；平静下来；专心于

settle down to doing sth.开始认真做某事；静下心来做某事

(5)He settled down in his chair to read the newspaper.

他坐在椅子上读报纸。

(6)They decided to move back to the village and settle down to the research.

他们决定搬回村子，静下心做研究。

(7)He found it hard to settle down to doing(do) his homework then.

当时他发现很难静下心来做作业。

5．Earlier that day，when they crossed the Rocky Mountains，they managed to catch sight of some mountain goats and even a grizzly bear and an eagle.

那天早些时候，当火车穿越落基山脉时，她们总算见到了野山羊，甚至还看到了一只大灰熊和一只鹰。

manage to do sth.设法做成......

manage it做成某事

(1)We managed to get to the airport in time.

我们设法及时赶到了机场。

(2)Thank you very much，but I can manage it myself.

非常感谢，但是我自己能行的。