Unit 5 Grammar 课件 2025-2026学年沪教版八年级英语下册

Unit 5 Saving animals in danger Grammar In this lesson, students will be able to: understand and use the structure "adjective + enough + to + verb", and recognize its relationship with "too + adjective + to + verb". master the two core sentence patterns with it as an empty subject. Focus on 基本用法 Using it as an empty subject (1) Let's read two sentences and feel which one is more comfortable and more natural. Which sentence is easier to read? Which one doesn't make you feel "top-heavy(头重脚轻)"? When the subject of a sentence is a long infinitive expression, we usually start the sentence with the empty subject it and put the infinitive expression at the end. To protect the giant panda reserve in Chengdu well is very important for us. It is very important for us to protect the giant panda reserve in Chengdu well. Read the passage about protecting animals in danger. Pay attention to the sentences in red. Explain what it refers to in each of the sentences in red. There are more and more people on this planet, and this is harming the environment. It is not easy for many animal species to survive. I once watched a video about illegal hunting. In the video, some hunters killed a tiger. It was very cruel of them to do so. What is worse, those people also make a lot of money from this. I think it is wrong of them to sell products made from animals in danger. It is important for us to protect nature. My friend and I have joined a local environmental group. This weekend, we will collect money for a wildlife charity. My uncle has offered to drive us to the event. It is very kind of him to help! It作形式主语，放于句首。 不定式短语是真正的主语，放于句末。 为什么用到的介词不同呢？ It is + adj. + to do sth. + for / of + n. / pron. 1. It is not easy for many animal species to survive. 2. It is important for us to protect nature. "It is + adj. + for + n. / pron. + to do sth."意为"对某人来说，做某事……"。在该句型中，形容词如dangerous, difficult, easy, hard, impossible, important, possible等，修饰的对象是动词不定式，这个句型往往用于句子强调从这个人的角度看待该动作的难易或可能性，这个动作通常尚未发生。该结构多用于陈述客观情况，而非表达对该人的主观评价。 We use for when the adjective mainly modifies _______. the verb 1. It was very cruel of them to do so. 2. I think it is wrong of them to sell products made from animals in danger. 3. It is very kind of him to help! We use of when the adjective mainly describes _________. "It is + adj. + of + n. / pron. + to do sth."意为"某人做某事真/太……"。 在该句型中，形容词多是描述人物的性格、品质的形容词，如careless, clever, good, kind, nice, polite等，修饰的对象是句子的逻辑主语，即后面的名词或代词。而且，在说这句话之前，句中的那个动词通常都已经完成。 the person 例句 句型 句中形容词的修饰对象 说话时句中所说动作是否完成 It is important for us to learn English well. It is very nice of you to lend me an umbrella. It is + adj. + for + n. / pron. + to do sth. It is + adj. + of + n. / pron. + to do sth. 动词不定式"to learn English well" 句子的逻辑主语，即of后面的代词"you" 说话时这个动作可能并未完成 说话前句中的动作已经完成 Let's protect animals in danger! (1) It is important for people / us to ____________________________________________. (2) ________________________________________________________________________ (3) ________________________________________________________________________ (4) ________________________________________________________________________ (5) ________________________________________________________________________ P73 1 1 Read the notes below. Then write a short notice to remind your classmates about how to protect animals in danger. Ways to protect animals in danger (1) learning about the animals in danger in the area—important (2) Buy products made from animals in danger—wrong (3) report any hunting of animals in danger—helpful (4) protect the homes of animals in danger—right (5) take care of injured animals—necessary learn about the animals in danger in the area It is wrong of people / us to buy products made from animals in danger. It is helpful for people / us to report any hunting of animals in danger. It is right for people / us to protect the homes of animals in danger. It is necessary for people / us to take care of injured animals. Notice 受伤的动物 Using adjective + enough + to + verb Focus on 基本用法 The elephant is now strong enough to walk. Read the sentence and pay attention to its pattern. enough作副词，修饰动词、形容词和别的副词时，置于它们之后。 "adj. + enough + to do sth."句型中，enough为副词，修饰形容词，表示主语所指的对象有足够的能力去做某件事情，意为"足够……来……"。 Things to remember enough to和too ... to有时可以转换，注意其中的形容词要作相应的变化，即：enough前的形容词与too之后的形容词互为反义词，同时应改为not ... enough to的形式。 Look! The elephant was not strong enough to walk. = The elephant was too weak to walk. "too + adj. + to do sth." 意为："太……以至于不能做某事"，表示因为程度过甚，导致某个动作无法完成，常用于表达一个否定的结果。 P74 2 2 Ma Kai is telling Du Yun about his trip to the zoo. Complete their conversation with the words in brackets. Ma Kai: A boy was throwing rocks at a wild duck in the zoo, but I was (1)_____________________(not brave/ tell) him to stop doing it. Then a man and a woman walked past, so I told them what was going on. They were (2)__________________(kind/ help) me. The boy ran away immediately! Du Yun: What happened to the duck then? Ma Kai: It flew away from us. I think it came close because it was hungry. Du Yun: Did you see any other animals during your trip? Ma Kai: Yes, I saw some sheep in the feeding area. Baby sheep are (3)________________(big/ feed) themselves. I took some photos. Here! Take a look! Du Yun: Wow! How cute! not brave enough to tell kind enough to help big enough to feed It is important for us to ... It is cruel of humans to ... We are old enough to ... It is never too late to ... Talk in pairs about why we should help protect animals in danger. Use the expressions below to help you. P74 3 * It is + adj. + for + n. / pron. + to do sth. 对某人来说，做某事…… * adj. + enough + to do sth. 足够……去做某事 * It is + adj. + of + n. / pron. + to do sth. 某人做某事真/太…… * not + adj. + enough + to do sth. = too + adj. + to do sth. 1. Lin Tao ran _______ to get the first place in the 100-meter race. A. enough fast B. fast enough C. slow enough 【2025 绥化市 单项选择】 2. Sorry, you are not old enough to drive.（改为同义句）Sorry, you are _______ young _______ drive. 【2025 重庆市 完成句子】 too to ① He is ________________(足够自信) to make a speech in front of the public. 【2024 江苏省连云港市】 ② It is _______(luck) for us to be born in China. 【2024 四川省达州市】 ③ It's _____________________ (对每个人都很重要) to keep calm when the earthquake happens. 【2024 四川省广安市】 confident enough lucky important for everyone 3. 根据括号中所给词或者汉语意思，完成句子。 1. Can you use "It is + adj. + for / of + n. / pron. + to do sth." correctly? 2. Can you use "adj. + enough + to do sth." and "too + adj. + to do sth." correctly? 1. Write at least 9 sentences about why we should help protect animals in danger by using "It is + adj. + for / of + n. / pron. + to do sth.", "adj. + enough + to do sth." and "too + adj. + to do sth.". 2. Preview Speaking part on page 75. $