Unit 7 The natural world（Grammar）课件——2025-2026学年八年级上册《英语》译林版

Unit 7 The natural world（Grammar）年 级：八年级 学 科：英语（译林版）Sentence structuresMatch the following sentences with correct structuresS+VForests are helpful. The ocean water rises.S+V+OWetlands prevent floods.S+V+PRevisionSVOPsentenceForests are helpful. The ocean water rises.Wetlands prevent floods.Sentence structuresRevision 1. S + V 2. S + V + O 3. S + V + P 4. ? 5. ? Sentence structure 4PresentationThe sun gives ocean animals light and heat.VOOtwo objects双宾语what an action is done to or forwhat is directly affected by the actiondirect object ( DO) 直接宾语indirect object ( IO) 间接宾语 S V IO DOThe sun gives light and heat ___ ocean animals.verbs that can be used with to:give hand lend offer pass post read sell send show take teach tell writeSto DO IO Sentence structure 4We should build local wildlife a better home. S V IO DOWe should build a better home local wildlife. verbs that can be used with for:build buy cook find get leave make order pick preparesavefor DO IO PresentationSentence structure 4 S + V + IO + DO DO to/for IO 1. S+V 2. S+V+O 3. S+V+P 4. ? 5. ?4. S+V+O+OPresentationSentence structure 5 S V O CThe mother bird keeps the eggs safe. They call the ocean the “heart” of the earth. We made the forest the topic of this class. ? the object complement (OC) 宾语补足语SVDOPresentation (+be)describe 描述The mother bird keeps the eggs safe.They call the ocean the “heart” of the earth.We made the forest the topic of this class. The eggs are safe. The ocean is the “heart” of the earth.The forest is the topic of this class.Sentence structure 5 1. S+V 2. S+V+O 3. S+V+P 4. S+V+O+O 5. ?5. S+V+O+CPresentationPresentationSentence structure 5 S+V+O+CNoun or noun phrase (名词或名词短语)Adjective(形容词)Pronoun(代词)Prepositional phrase (介词短语)Infinitive(不定式)Participle(分词)Sentence structures 4 & 5 Presentationusually sb.sth.a logical subject-predicate relation 逻辑上的主谓关系use to/for to exchange positions 互换add be to make a sentence 组句Sentence structures Presentationadverbial 状语 whenwherehow The volunteer planted 200 trees with a shovel at the desert yesterday.adverbial of placeadverbial of timeadverbial of mannerIdentify and matchPracticeS+V+O+CS+V+O+OS+V+O+O（+A）The weather made the journey to the polar areas hard. They showed us maps of the polar areas.The teacher gave the class a lesson on polar animals yesterday afternoon.Read and writePractice Many desert plants give animals water, but a few desert plants give food to animals. Little rain and too much sunshine make deserts dry. Write about ecosystemsProduction S+V+O+C+O+ODesertsEcosystemsOceansWetlandsForests. . .Many desert plants give animals water.A few desert plants give food to animals. Little rain makes deserts dry. Too much sunshine makes deserts dry.Conjunctions PresentationConjunctions What are conjunctions?join 2 or more words 单词 phrases 短语 clauses 从句Why are conjunctions used?connectionHow are conjunctions used?w/p+conj.+w/pw/p+ , +w/p +conj.+w/pC + , conj.+ CConjunctionsRevision(1) Each ecosystem has a role to play helps keep the balance between all its members and the greater environment.(2) The water cycle goes on and on, the ocean is just like the “heart” of the earth.(3) Wetlands only cover about 6% of the earth’s land area, they are home to about 40% of the world’s plants and animals.(4) People should protect forests, the weather will get worse.Complete the following sentences in Reading by using and, but, or and so. and so but orConjunctions PresentationHow are conjunctions used?Conjunctions Practice(1) Bees are tiny, so they play a big role in helping plants grow. ( )(2) Frogs can live on land or in water. ( )(3) Elephants are the largest land animals, but they need a lot of food to survive every day. ( )(4) Mountains are home to many animals, and they can also affect the weather. ( )Judge and correct the following sentences. butsoConjunctions PracticeFinish Part B1 on page 99.Grasslands can be hot, so animals sit under the shade of trees.Wetlands can have salt water and fresh water.There are forests in Asia and Europe.  Deserts are dry, but they are not always hot. Some rainforest animals don’t like wind or rain. Many desert plants give animals water, but a few desert plants give food to animals. Little rain and too much sunshine make deserts dry. Write about ecosystemsProduction conjunctionsDesertsEcosystemsOceansWetlandsForests. . .orsoand but Some plants offer shade or shelter to small animals. These make life hard, so animals learn to find what they need. Homework Compulsory homework:1. Complete and polish your ideas about ecosystems. 2. Review sentence structures and conjunctions.Optional homework:Share your ideas about ecosystems with your classmates andcollect their ideas.谢谢观看Thank you