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in the end (最终)
on the other hand (换句话说)
on the contrary (相反)
[误]The little boy and girl walk along the street a hand in a hand.
[正]The little boy and girl walk along the street hand in hand.
[析]这是英语中的习惯用法，如：
bit by bit (逐渐)
day after (by) day (一天又一天)
day and night (日日夜夜)
face to face (面对面)
from A to Z (自始至终)
from time to time (再三)
hand in hand (手拉手)
shoulder by shoulder (肩并肩)
(三) 例题解析
1.Mr Li is___ old worker.
A a B an C some D /
[答案]B.
[析]an用于元音音素开始的单词前。
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