5. The old man is a practiced oar.
这个老人是个老练的划船手。
还能这样说：
The old man can go boating with a light hand.
The old man is extremely professional in rowing.
应用解析：
rest one's oars 暂时歇一歇;
lie on one's oars 搁桨;吃老本;
toss oars 举桨致敬;
pull a lone oar 独自干;
put one's oar in 干预;管闲事
6. Fatigued with rowing, we must have a rest.
划船划得累了，我们一定要休息一会儿。
还能这样说：
We all row out, so we must take a break.
We are all tied out after rowing, so we must rest up a little.
应用解析：
suffer from fatigue 感到疲劳;
auditory fatigue 听觉疲乏;
fatiguing work 累人的工作
7. They veered the boat around and pulled for the shore.
他们将船掉过头来，用力向河岸划去。
还能这样说：
They brought the boat around and strained to row it to the shore.
They manoeuvred the boat round and pulled it toward the bank of the river.
应用解析：
pull sb. by his ear 扯某人的耳朵;
pull a knife on sb. 拔出刀子对准某人;
pull up with 追上，赶上;
pull in (车)进站;(船)靠岸
8. Some children were playing volleyball on the bank and some people rowing on theriver.
孩子们在岸上打排球，有些人在河里划船。
还能这样说：
Some people rowed the boat on the river at the same time some children are playing volleyball.
I found some people boating in the lake and some children playing volleyball.
应用解析：
cross the river 渡河;死;
sell sb. down the river 陷害，出卖某人;
send up the river 关进监狱;
rivers of blood 血流成河