二、根据句意,在所给词的前面加上正确的前缀
1. It's
impossible
(possible) for us to finish the work within hours.
2. He stopped walking at the crossing,
unsure
(sure) about which road to choose.
3. If someone doesn't show good manners (举止) to others, he is
impolite
(polite).
4. The shopkeeper gave me an
unfriendly
(friendly) look when I wanted to try on a third pair of jeans.
5. Don't believe him. What he told you is
incorrect
(correct).
6. It's
unusual
(usual) to see snow in June. It's usually hot.
7. — Would you like to eat some fried chicken?
— No, thanks. I think it tastes delicious but is
unhealthy
(healthy).
8. My homework is
incomplete
(complete) because I forgot to do the last two Maths problems.
解析:
【分析】本题考查英语中常见形容词的否定前缀用法,解题时需先理解每个句子的语境,明确空格处需要表达的否定含义,再结合所给形容词的特点,选择正确的否定前缀(如im-、un-、in-等),组合成符合句意的否定形容词填入空格。
【解析】1. 句意:我们在几小时内完成这项工作是不可能的。形容词possible(可能的)的否定前缀为im-,故填impossible。
2. 句意:他在十字路口停下,不确定选哪条路。形容词sure(确定的)的否定前缀为un-,故填unsure。
3. 句意:如果有人对他人举止不好,他就是不礼貌的。形容词polite(礼貌的)的否定前缀为im-,故填impolite。
4. 句意:当我想试第三条牛仔裤时,店主给了我不友好的表情。形容词friendly(友好的)的否定前缀为un-,故填unfriendly。
5. 句意:别相信他,他告诉你的是不正确的。形容词correct(正确的)的否定前缀为in-,故填incorrect。
6. 句意:六月下雪是不寻常的,通常六月很热。形容词usual(寻常的)的否定前缀为un-,故填unusual。
7. 句意:——你想吃炸鸡吗?——不了,谢谢。它尝起来美味但不健康。形容词healthy(健康的)的否定前缀为un-,故填unhealthy。
8. 句意:我的作业没完成,因为我忘了做最后两道数学题。形容词complete(完成的)的否定前缀为in-,故填incomplete。
【答案】1. impossible 2. unsure 3. impolite 4. unfriendly 5. incorrect 6. unusual 7. unhealthy 8. incomplete
【知识点】英语否定前缀;形容词的否定形式
【点评】本题围绕常见形容词的否定前缀展开,结合句意考查词汇变形,属于基础英语词汇题,需学生掌握不同形容词对应的否定前缀规则,整体难度较低。
【难度系数】0.7