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Ⅰ. Rewrite each sentence using the words in brackets.
1. We read about inspiring people when we feel lost. (necessary)
It is necessary for
2. An octopus has three hearts and nine brains. (amazing)
It is
3. Someone masters a foreign language in 30 days. (almost impossible)
4. Zhang Guimei spends most of her life working for education. (admirable)
5. Jane Goodall lived alone in the forest to study chimpanzees. (brave)
1. We read about inspiring people when we feel lost. (necessary)
It is necessary for
us to read about inspiring people when we feel lost.
2. An octopus has three hearts and nine brains. (amazing)
It is
amazing that an octopus has three hearts and nine brains.
3. Someone masters a foreign language in 30 days. (almost impossible)
It is almost impossible for someone to master a foreign language in 30 days.
4. Zhang Guimei spends most of her life working for education. (admirable)
It is admirable of Zhang Guimei to spend most of her life working for education.
5. Jane Goodall lived alone in the forest to study chimpanzees. (brave)
It was brave of Jane Goodall to live alone in the forest to study chimpanzees.
答案
1. us to read about inspiring people when we feel lost.
2. amazing that an octopus has three hearts and nine brains.
3. It is almost impossible for someone to master a foreign language in 30 days.
4. It is admirable of Zhang Guimei to spend most of her life working for education.
5. It was brave of Jane Goodall to live alone in the forest to study chimpanzees.
2. amazing that an octopus has three hearts and nine brains.
3. It is almost impossible for someone to master a foreign language in 30 days.
4. It is admirable of Zhang Guimei to spend most of her life working for education.
5. It was brave of Jane Goodall to live alone in the forest to study chimpanzees.
解析
【分析】这道题要求用括号内词汇将原句改写为以it作形式主语的句子，核心是掌握“It is + 形容词/短语 + (for/of sb) + to do sth”或“It is + 形容词 + that从句”的结构。解题时需注意：1. 判断形容词修饰事物还是人的品质，确定用for sb还是of sb；2. 原句动词转换为不定式，同时注意时态一致性（如第5题原句为过去式，be动词用was）。
【解析】
1. 括号内为necessary，修饰事物，用“It is necessary for sb to do sth”结构，原句主语We对应宾格us，动词read变不定式to read，故填us to read about inspiring people when we feel lost.
2. 括号内为amazing，修饰事物，用“It is amazing that + 陈述句”结构，直接连接原句内容，故填amazing that an octopus has three hearts and nine brains.
3. 括号内为almost impossible，修饰事物，用“It is almost impossible for sb to do sth”结构，原句主语Someone，动词masters变不定式to master，故填It is almost impossible for someone to master a foreign language in 30 days.
4. 括号内为admirable，修饰人的品质，用“It is admirable of sb to do sth”结构，原句动词spends变不定式to spend，故填It is admirable of Zhang Guimei to spend most of her life working for education.
5. 括号内为brave，修饰人的品质，用“It is brave of sb to do sth”结构，原句为过去式，be动词用was，动词lived变不定式to live，故填It was brave of Jane Goodall to live alone in the forest to study chimpanzees.
【答案】
1. us to read about inspiring people when we feel lost.
2. amazing that an octopus has three hearts and nine brains.
3. It is almost impossible for someone to master a foreign language in 30 days.
4. It is admirable of Zhang Guimei to spend most of her life working for education.
5. It was brave of Jane Goodall to live alone in the forest to study chimpanzees.
【知识点】
it作形式主语；for/of用法；动词不定式
【点评】
本题围绕it作形式主语的核心句型展开，重点考查for与of的区分使用及动词形式转换，是初中英语基础语法题型，能帮助学生巩固形式主语结构和形容词搭配规则，难度适中。
【难度系数】
0.6
【解析】
1. 括号内为necessary，修饰事物，用“It is necessary for sb to do sth”结构，原句主语We对应宾格us，动词read变不定式to read，故填us to read about inspiring people when we feel lost.
2. 括号内为amazing，修饰事物，用“It is amazing that + 陈述句”结构，直接连接原句内容，故填amazing that an octopus has three hearts and nine brains.
3. 括号内为almost impossible，修饰事物，用“It is almost impossible for sb to do sth”结构，原句主语Someone，动词masters变不定式to master，故填It is almost impossible for someone to master a foreign language in 30 days.
4. 括号内为admirable，修饰人的品质，用“It is admirable of sb to do sth”结构，原句动词spends变不定式to spend，故填It is admirable of Zhang Guimei to spend most of her life working for education.
5. 括号内为brave，修饰人的品质，用“It is brave of sb to do sth”结构，原句为过去式，be动词用was，动词lived变不定式to live，故填It was brave of Jane Goodall to live alone in the forest to study chimpanzees.
【答案】
1. us to read about inspiring people when we feel lost.
2. amazing that an octopus has three hearts and nine brains.
3. It is almost impossible for someone to master a foreign language in 30 days.
4. It is admirable of Zhang Guimei to spend most of her life working for education.
5. It was brave of Jane Goodall to live alone in the forest to study chimpanzees.
【知识点】
it作形式主语；for/of用法；动词不定式
【点评】
本题围绕it作形式主语的核心句型展开，重点考查for与of的区分使用及动词形式转换，是初中英语基础语法题型，能帮助学生巩固形式主语结构和形容词搭配规则，难度适中。
【难度系数】
0.6
Ⅱ. Complete the text with correct sentence parts. There is one extra option.
A. It is brave of her
B. It is inspiring that
C. It is important for us
D. It was a strange thing
E. it was much harder for him
A. It is brave of her
B. It is inspiring that
C. It is important for us
D. It was a strange thing
E. it was much harder for him
答案
1. A
2. E
3. C
4. B
2. E
3. C
4. B
解析
【分析】
本题为英语句子补全题，需结合语境及It作形式主语的固定句型结构，分析各选项含义，匹配空缺处的逻辑与语法要求，同时注意有一个多余选项，逐一排除确定答案。
【解析】
首先明确各选项结构与含义：
A. It is brave of her：brave描述人的品质，用of连接sb，意为“她很勇敢”；
B. It is inspiring that：inspiring描述事物性质，后接从句，意为“……是鼓舞人心的”；
C. It is important for us：important描述事物性质，用for连接sb，意为“对我们来说重要”；
D. It was a strange thing：意为“那是件奇怪的事”；
E. it was much harder for him：hard描述事物难度，用for连接sb，意为“对他来说难得多”。
结合文本空缺语境，依次匹配：第一个空缺对应A，第二个对应E，第三个对应C，第四个对应B，多余选项为D，符合要求。
【答案】
1. A
2. E
3. C
4. B
【知识点】
It作形式主语的固定句型；句子补全
【点评】
本题考查It作形式主语的核心句型用法，需区分of与for在句型中的不同用法（of修饰人的品质，for修饰事的性质），结合语境匹配选项，难度中等，适合基础阶段学生练习。
【难度系数】
0.5
本题为英语句子补全题，需结合语境及It作形式主语的固定句型结构，分析各选项含义，匹配空缺处的逻辑与语法要求，同时注意有一个多余选项，逐一排除确定答案。
【解析】
首先明确各选项结构与含义：
A. It is brave of her：brave描述人的品质，用of连接sb，意为“她很勇敢”；
B. It is inspiring that：inspiring描述事物性质，后接从句，意为“……是鼓舞人心的”；
C. It is important for us：important描述事物性质，用for连接sb，意为“对我们来说重要”；
D. It was a strange thing：意为“那是件奇怪的事”；
E. it was much harder for him：hard描述事物难度，用for连接sb，意为“对他来说难得多”。
结合文本空缺语境，依次匹配：第一个空缺对应A，第二个对应E，第三个对应C，第四个对应B，多余选项为D，符合要求。
【答案】
1. A
2. E
3. C
4. B
【知识点】
It作形式主语的固定句型；句子补全
【点评】
本题考查It作形式主语的核心句型用法，需区分of与for在句型中的不同用法（of修饰人的品质，for修饰事的性质），结合语境匹配选项，难度中等，适合基础阶段学生练习。
【难度系数】
0.5
