2021届高考英语一轮专题15构词法复习题及答案Ⅰ.依照语境，用所给词的否定形式填空1．It is ________ (legal)to drive after drinking alcohol.答案illegal[句意：酒后开车不合法。
]2．________ (lead)advertisements are not allowed by law.答案Misleading[句意：误导的广告为法律所不承诺。
]3．It is ________ (reasonable)to stick to this absurd proposal.答案unreasonable[句意：坚持这种荒谬的建议是不合理的。
]4．You must be ________ (literate)if you have not heard of Shakespeare.答案illiterate[句意：假如你没听说过莎士比亚，那你一定是文盲的。
] 5．There exists the ________ (balance)between the rich and poor countries.答案imbalance[句意：富国与穷国之间存在着不平稳。
]6．Her illness had made her completely ________ (mobile)．答案immobile[句意：她的病使得她完全不能活动了。
]7．His identity is ________ (know)to us so we have to confirm.答案unknown[句意：他的身份为我们所不知，因此我们得证实。
] 8．He seems to be ________ (aware)of the trouble he is making.答案unaware[句意：他看起来不明白他正造成的苦恼。
]9．Jim is ________ (patient)with his little sister who is so noisy.答案impatient[句意：吉姆对他吵闹的小妹妹不耐烦。
]10．The ________ (expect)death of her son made her sad.答案unexpected[句意：她亲小孩意外的死亡使她难过。
] 11．Running a business without a budget(预算)is ________ (practical)．答案impractical[句意：经营生意而没有预确实是不实际的。
]12．The government ________ (close)that another ambassador had been arrested for spying.答案disclosed[句意：政府公布另一个外交大使因间谍罪被逮捕。
] 13．The bright dress is ________ (proper)for a funeral.答案improper[句意：鲜艳的衣服对葬礼来说不合适。
]14．This delay was ________ (avoidable)so we had to be patient.答案unavoidable[句意：延迟不可幸免，因此我们得耐心。
]15．His income is ________ (adequate)to meet his basic needs and he has to find another job.答案inadequate[句意：他的收入不足以满足差不多要求，他得再找份工作。
]16．Students get a ________ (count)of 25%on plane tickets.答案discount[句意：学生享有25%的机票折扣。
]17．The water is ________ (fit)for drinking and you have to gowithout water.答案unfit[句意：这水不适宜饮用，你只能不喝水了。
]18．It's ________ (honesty)to lie about one's age.答案dishonest[句意：谎报自己的年龄是不诚实的。
]19．The injured man was ________ (capable)of walking，so he had to be carried.答案incapable[句意：那个受伤的人不能走路，因此他得被人背着。
] 20．He was ________ (ability)to sleep at night because of his anxiety.答案unable[句意：由于焦虑，晚上他不能入睡。
]Ⅱ.用所给词的正确形式填空1．The Chinese people are very ________ (friend)to foreigners.答案friendly[空处应填friend的形容词形式。
]2．I think it'll be ________(sun)this afternoon.答案sunny[空处应填形容词作表语。
]3．David moved ________ (caution)forward.答案cautiously[句意：戴维小心翼翼地往前挪。
]4．Without reform，social and economic problems can only be ________(bad)．答案worse[句意：没有改革，社会和经济问题只会每况愈下。
]5．The teacher gave them ________ (instruct)to arrive early tomorrow morning.答案instructions[句意：老师命令他们改日早晨要早到。
]6．Three people have been killed in a bomb ________(explode)in northwest Spain.答案explosion[句意：在西班牙西北部的炸弹爆炸事件中，已有3人死亡。
] 7．One should have the ability to tell the ________(different)between right and wrong.答案difference[固定表达tell the difference＝distinguish(区别)。
]8．He is a ________ (quality)teacher who is respected by his students.答案qualified[形容词，“合格的”。
]9．For many Americans the automobile is a ________(necessary)．答案necessity[不定冠词a后接可数名词单数。
]10．He ________ (like)wearing a tie，so you will never see him in tie.答案dislikes[依照“从来看不到他打领带”能够推断“他不喜爱打领带”。
]11．You must look after yourself and keep ________ (health)．答案healthy[keep为系动词，后面应该接形容词。
]12．Excessive dosage(剂量)of this drug can result in ________(injure)to the liver.答案injury[名词injury表示“损害”。
]13．“Thank you.”is a polite ________ (express)w hich is widely used in English.答案expression[a polite expression表示“一种礼貌的表达”。
]14．He ________ (brave)went into the building house to rescue the baby.Everybody present praised him for his ________ (brave)．答案bravely；bravery[第一空用副词修饰动词；第二空前有物主代词his，后面用名词。
]15．Most Chinese like drinking tea，while ________(America)like coffee.答案Americans[与前一句中Chinese相呼应。
]16．More and more people go in for sports in modern ________(time)．答案times[in modern/ancient times在现代/古代，为固定搭配。
] 17．Nice to meet you，Tom.Did you have a good ________(fly)?答案flight[形容词后接名词。
]18．Too much hunting ________ (danger)many species in the past.答案endangered[动词作谓语，依照in the past可知用一样过去时。
] 19．Harry Potter is a boy who is full of ________ (imagine)．答案imagination[名词，“想象力”。
]20．After ________(graduate)，he left China for America for further study.答案graduation/graduating[介词后接名词或动名词。
]21．If you want to go ________ (travel)，you'd better get everything ready in advance.答案traveling[go traveling/swimming/fishing/camping/shopping等为固定结构。
]22．Which means of ________ (transport)will you use if you travel to Beijing?答案transportation[means of transportation交通方式。
]23．You should assume that the ________(win)would receive big money but they only got a certificate.答案winners[从后面的they能够看出指人同时要用复数。