1. Beware of methylated alcohol, which is very poisonous, and should never be added to drinking water.
    要提防甲基化酒精，那是剧毒的，永远不能掺入饮用水。

2. C.You decide to enjoy the car and to worry about the added expense later.
    c.你决定享受这辆汽车，以后再去为增加的开销发愁。

3. But he added, "You don't have to know how everything is put together, just how the system operates.
    但他又补充道："可你无须知道各部件是怎样组装的，只要知道系统怎样操作就行了。

4. When people added one extra day to February every four years, they were adding 24 hours, whereas they should have added only 4 times 5 hours, 48 minutes and 46 seconds — a total of 23 hours, 15 minutes and 4 seconds.
    人们每四年给2月增加一天，这就增加了24小时，但实际上他们应该增加4个5小时48分46秒——一共是23小时15分4秒。

5. The suffix -er is added to verbs to form nouns.
    动词之后加er构成名词。

6. To such motives, yet another must be added.
    除上以动机外，还应加上一个。

7. This was added to the list.
    这一项也写进了欠单里。

8. Tom swept his brush artistically back and forth — stepped back to note the effect — added a touch here and there — criticized the effect again.
    汤姆艺术家般地将刷子来来回回地掠过——后退几步看看效果——不时地这儿那儿再加上一笔——再挑剔一下。

9. The white woman added quickly, “I mean, do you like this country?”
    那个白人姑娘赶紧加了一句：“我的意思是, 你喜欢这个国家吗？”

10. The wife, still uneasy, added: “I put out the light and we were able to see better.”
    而仍然惊魂未定的妻子补充说，"我把灯关了，这样我们能看得清楚些。"