Unit 2 Topic 1-2021-2022九年级英语上册知识点精讲精练+ABCD每课作业（仁爱科普版）

Unit 2 Saving the earty Topic 1 Pollution has caused too many problems. 第一部分 知识点精讲精练 一、词汇拓展记忆 1．pollute ___________(名词) 2．breathe ______________(名词) 3．harm ____________(形容词) ★ be harmful to / do harm to对……有害 4．recent ______________ (副词) 5．produce ____________ (名词) 6．pain _____________ (形容词) 7．including ______________(动词) 8．environment ___________ (形容词) 9．butterfly _____________ (复数) 10．comfortable ______________ (反义词) 11．pleasant ____________ (反义词) 12．health ___________ ____________　(形容词－副词) 二、重点词组短语 1．把……倒入pour...into 2．砍树cut down trees 3．更糟糕的是what’s worse 4．对……有害的be harmful to/do harm to 5．心情好/差in a good/bad mood 6．写信给write to 7．发出太多噪音make too much noise 8．乱扔throw...around 9．失聪，丧失听力hearing loss/lose their hearing 10．高血压high blood pressure 11．变聋go deaf 12．与……一样差no better than 13．公共场合in public 14．导致某人做…… cause sb.to do 15．尽力做某事try to do sth. 16．对……不好be bad for 三、知识点解析 1．There are several chemical factories pouring waste water into the stream. 有几家工厂正往小溪里排放废水。 There be＋主语＋doing＋介词短语， several “若干个”。 There is a truck collecting rubbish outside.有一辆垃圾车在外面收垃圾。 (1)there be 句型结构中可用动词分词表示伴随动作，如：There are some birds singing to us in the tree. (2)several与复数名词连用，比a few多一点，但不如many多，表示不确定的数量；lots of，plenty of“许多，大量”，some“一些”，后接可数名词复数或不可数名词，many“许多”，后接可数名词复数；a little“一点儿”，much“许多”，后接不可数名词。 【即学即练】 ①There is a wallet ________ on the ground. A．lying　 B．is lying　 C．lie ②I saw the movie ________ times. A． much B．few C．several 2．Human polluted the sea，so I don’t live happily.人类污染了大海，所以我生活的不快乐。 pollute v．污染 The river has been polluted with toxic waste from local factories.当地工厂排放的有毒废弃物污染了这条河。 (1)pollute动词，意为“污染，弄脏”； (2)pollution名词，意为“污染，污染物”，如： air pollution, noise pollution, water pollution。 【即学即练】 ①These gases ________ (pollution) the air of towns and cities. ②The men were clearing all the __________(pollute) off the beach. 3．I’ve got a pain in my throat.我咽喉疼痛。 pain n．疼痛 His disappearance caused his parents a great deal of pain.他的失踪使双亲悲痛万分。 (1)pain“疼，痛苦”，常指身