题目内容
17.Smoking isharmful to our health.( harm )分析 吸烟有害健康.
解答 答案:harmful.结合句意是说吸烟有害健康,is是系动词,后加形容词构成系表结构,harm是名词伤害,其形容词是harmful,be harmful to表示对…有害,故答案是harmful.
点评 名词加-ful构成形容词,表示肯定.如:
use (使用)→useful (有用的,有益的) help (帮助)→helpful 有益的) harm (伤害,损害)→harmful (有害的) forget (忘记)→forgetful (健忘的) beauty (美丽)→beautiful (美丽的)[特别提醒:别忘了把-y变成-i,再加-ful]
care (关心,小心)→careful (小心的,仔细的) pain (疼痛)→painful (疼痛的)
wonder (惊奇,感到奇怪)→wonderful (极好的) color (颜色)→colorful (彩色的;色彩艳丽的) thank→thankful (感激的,欣赏的)
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