Unit 2 第三课时 Grammar Focus (4a-4c)-【益卷】2026-2027学年九年级上册英语课时作业（人教版·新教材）

第三课时 Grammar Focus（4a-4c) 语法精讲 t作形式主语。 当动词不定式(todo)或从句作主语时，句子会显得“头重脚轻”， 所以我们常用t作形式主语 It's+ad可.+ofsb.+to do sth.(做某事是.的) ad描述的是人的性格、品质持征。 这类形容词有kind,good,nice,polite,clever,careless,foolish等 t句型。 1t's+adj.+for sb.+to do sth.(做某事是.的) t常用句型 adj描述的是事物的持征。 这类形容有difficult,,easy,hard,important,,(im)possible,dangerous等 It is helpful/necessary/important for us to listen to our teacher's advice. Itis/was+形容词+that从句 it是形式主语，真正的主语是后面的that引导的从句（主语从句），用来评价某件事的性质。 It is true that Yuan Longping's hybrid rice has helped reduce hunger worldwwide. 语法精练 I.用for/of填空。 1.It's brave her to save the child in the river. 2.It's difficult us to finish the task in one hour. 3.It's clever him to work out the problem quickly. 4.It's necessary students to keep a balance between study and rest. 5.It's careless Tom to make such a silly mistake. 6.It's important everyone to have courage to face difficulties. Ⅱ.单项选择。 )1.It's wise you learn from people you look up to. A.for;to B.of;to C.for;/ D.of: )2. possible for us to watch the live show this weekend. A.It's B.That's C.This is D.Its )3.—Is necessary for us to learn about these inspiring people? -Yes,I think so. A.that B.this C.it D.one )4.It's kind the scientist share his knowledge with teenagers A.of;to B.for;to C.of;for D.for;for )5.It's dangerous children swim in the river alone. A.of;to B.to;of C.to;for D.for;to 20 Ⅲ.用适当的介词、代词填空。 Yuan Longping is known as the "Father of Hybrid Rice". is great him to develop a new kind of rice and help reduce hunger.However, was difficult him to do that kind of work back in those days. is important us to learn from his spirit. was amazing he kept doing research even when he was very old. is really nice young scientists to continue his work and make more contributions to the world. 课时精练 I.根据汉语提示写单词（注意词形变化）。 1.It's (必要的)for us to learn from inspiring people around us. 2.Yuan Longping studied every rice (种子)to develop new kinds of rice. 3.He enjoyed reading science books during his (童年) 4.We can learn plenty of history from stories of ancient (朝代) 5. (西方的)culture is quite different from Chinese culture. Ⅱ.完成句子。（每空一词) 1.对我们来说，保护童年记忆是必要的。 It for us to protect childhood memories. 2.这粒种子在春天会长成一棵大树。 This will grow into a big tree in spring. 3.如果你努力，你的梦想就会实现。 If you work hard,your dream will Ⅲ.完形填空。 Zhang Guimei is a well-known teacher in China.1 is known that she has helped over 1,800 girls from poor families go to college.Many people think 2 is amazing that she has done so much for others. 3 took Zhang Guimei many years to realise her dream.She walked thousands of kilometers to visit students'homes.4 was not easy for her because she was in poor health.But she never gave up.She found meaningful to help every girl get an education. For her students,6 is a great honor to have a teacher like her.They all look up to her.One of them said,“7 is because of her that I can go to college.She is the most inspiring person in my life." )1.A.This B.It C.That D.What ( )2.A.this B.that C.it D.one ( )3.A.t B.That C.This D.What ( )4.A.This B.It C.That D.There ( )5.A.that B.this C.it D.one )6.A.this B.it C.that D.one ( )7.A.This B.That C.What D.It 21单元综合练习 核心考点突破 考点1：l.houses2.Housing 考点2：l.supported me in2.With the support of 考点3：1.easy2.easily 3.with 考点4：1.wide 2.widely 考点5：1.sand 2.sandy 考点6：1.used to2.is used to 微语段：l.was covered with 2.cover 3.covers 4.discuss 5.discusses 6.discussion Unit 2 Insp 第一课时Section A(1a-2d) I.1.inspiring 2.admire 3.historian 4.chemist 5.hunger 6.drop out 7.wounded 8.discovery 9.century 10.spreads Ⅱ.l.inspiring 2.pioneers 3.chemistry 4.British 5.admire 6.discovery 7.diseases 8.wounded Π.1-5 CBaCd 第二课时 ,Section A（3a-3c) I.1.pyramids 2.balance 3.courage 4.wisdom 5.brave Π.l.bravely 2.wisdom 3.to balance 4.look up to Ⅲl.l.balance 2.look up to 3.courage 4.wisdom 5.pyramids 6.live 7.bravely IV.1-5 EDABF V.1.give a performance in front of thousands of people 2.hurt her ankle badly 3.she might never dance again 4.决心 5.True strength comes from the heart.Never give up on your dreams. 第三课时Grammar Focus（4a-4c) 【语法精练】 I.1.of 2.for 3.of 4.for 5.of 6.for Π.1-5 BACAD 2 语篇素养提升 I.1-5 BBCAD 6-10 CCBAD Ⅱ.1-5 BCBCD III.1.village 2.changes 3.child 4.better 5.bought 6.had 7.receive 8.thinks 9.becoming 10.their IV.1.Have you changed a lot 2.What made you change 3.What do you want to learn 4.Don't worry 5.Thank you so much iring People II.It of it for/It for It/that It of 【课时精练】 I.1.necessary 2.seed 3.childhood 4.dynasties 5.Western Ⅱ.1.is necessary 2.seed 3.come true IⅢ.1-7 BCABCBD 第四课时Section B(1a-1f) I.1.scientific 2.biologist 3.whole 4.bank 5.forever 6.radio 7.collection 8.exploration Ⅱ.1.scientists 2.biologist 3.exploration 4.collection 5.whole 6.left behind 7.live on Ⅲ.1-5 ACBBD IV.1.How was your summer vacation 2.Did you went there to watch any competitions 3.Me,too 4.What else did you do in Paris 5.No problem Sure Of course 第五课时Section B（2a-3d) I.1.universe 2.inventor 3.thinker 4.belief 5.flight Ⅱ.1.inventors 2.flight 3.period 4.kindness 5.belief Ⅲ.1.Mankind universe 2.belief 3.daughter herself 4.inventor period IV.1-4 BBCC V.1.scientist 2.belief 3.study 4.elder