it 作形式主语练习题及答案-高中英语课后作业-第98页-组卷网

6 . Prevention is key, scientists say, because once ecosystems pass their tipping point (临界点), it is remarkably difficult for them _________ (return). (所给词的适当形式填空)

2021-06-15更新 | 84次组卷 | 3卷引用：UNIT 1 Food matters SectionⅡ Grammar and usage译林版2020选择性必修一

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19-20高一·全国·课时练习

语法填空-单句语填(约10词) | 较易(0.85) |

it 作形式主语

7 . ________ was surprising that you should have made so many mistakes in your math exercises. （用适当的词填空）

2021-06-15更新 | 57次组卷 | 1卷引用：UNIT 3 The art of painting Section Ⅰ Welcome to the unit & Reading译林版2020选择性必修一

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20-21高一·全国·课时练习

完成句子-根据中文句子补全英文 | 适中(0.65) |

recognize it 作形式主语一般现在时的被动语态主语从句的连接词

8 . 人们意识到环境污染已经变得越来越严重。（recognize)
_________ the environmental pollution has become more and more serious.

2021-06-15更新 | 383次组卷 | 4卷引用：UNIT 2 The universal language Section Ⅲ Integrated skills & Extended reading译林版2020选择性必修一

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20-21高一·全国·课时练习

完成句子-根据汉语提示填空 | 适中(0.65) |

it 作形式主语主语从句的连接词

9 . _________(人们承认) the environmental pollution has become more and more serious.（根据汉语提示完成句子）

2021-06-15更新 | 48次组卷 | 1卷引用：UNIT 2 The universal language Section Ⅲ Integrated skills & Extended reading译林版2020选择性必修一

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19-20高一·全国·课时练习

翻译-整句汉译英 | 较难(0.4) |

focus on spend…(in) doing sth. surf the Internet it 作形式主语 it 作形式宾语不定式作主语不定式作宾语 that,if, whether引导的宾语从句条件状语从句

10 . 你如果花太多时间上网，也许会发现很难在学习上集中精力。(汉译英)

2021-06-15更新 | 100次组卷 | 2卷引用：UNIT 2 Section IV Extended reading & Project & Further study 译林版2020必修2

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