1、Unit 2 Topic 2（Grade Nine）、词组及用法1、blow strongly风猛吹 rain heavily下大雨2、blow away吹走3、wash away冲走4、cut down砍伐，缩短 cut in插嘴，打断（说话） cut off切断（电源，水）；中断 cut out剪下；删去 cut up切碎注意：动副结构，代词必须放中间，且用宾格。eg. cut down the treescut the trees down cut it/them down5、as a result结果 as a result of由于 eg. As a result，he passed
2、 the exam.As a result of careless，she didnt pass the exam.6、change/turn，into把变成7、stop/prevent/keepfrom sth/doing sth阻止（做）某事eg. Trees can stop/prevent/keep the water from washing the earth away.8、save用法（1）贮存、保存eg. Forests can save a lot of water.Save sb sthsave sth for sb为某人保留（2）节省、节约，避免（金钱、时间等）浪费eg.
3、 We should save time.（3）救，挽救eg. save ones life 挽救某人的命 He saved his friends life in the accident.9、in danger处在危险中 in danger of处在的危险中10、die out灭绝eg. Some animals are in danger of dying out.11、come to 想到，意识到，总计，总共eg. The good idea comes to him in a flash. 他灵机一动，计上心来.That comes to 23 yuan, madam.总共23元，夫
4、人.12、the importance of的重要性eg. Many people have come to understand/realize the importance of planting trees.13、sth says that用“文字，数字”表达信息（主语，是事或物）eg. It says in the newspaper that pollution is still a serious problem.The newspaper says that pollution is still a serious problem.Its said that据说Its repor
5、ted that据报道Its well known that众所周知Its believed that人们相信14、here and thereeverywhere到处15、worst of all最糟糕的是16、in the beginning指一件事的初期17、take away拿走，取走，带走18、escape sth/doing stheg. He is very lazy. He often escapes the study.The man escaped doing the work. escapefrom从逃脱eg. The boy escaped successfully f
6、rom that big fire.19、refer to sth/sb谈及/提到/涉及某人或某事20、seem用法（1）It seems that+从句eg. It seems that their living conditions are very good.（2）主语+seem to do stheg. She seems to pass the test.（3）主语+seem+形容词eg. He seems very happy.21、protect/destroy the environment 保护/破坏环境22、avoid sth/doing sth避免eg. Try to a
7、void speaking loudly in the reading. How can they avoid a serious water shortage？23、be short of短缺缺乏24、divideinto把分成25、come into being形成、辨析1、a number of与the number of a number ofmany+名复许多 a great/large/small number ofeg. A large number of books have been sold the number of+名（复）+谓（单）的数量eg. The number
8、of the students in our school is 3900.2、none与no onenone of+名/代词+谓语 eg. None of the girls likes/like playing the violin. How many birds can you see in the picture？None.How much milk is there in the bottle？None.no one没有人，不与of连用，可与else连用，作主语时，谓语动词单数。eg. No one came here yesterday. No one else knows abo
9、ut that.Who is in the room？No one.3、rise和raise rise常用作不及物动词：升起，上升，站起来，起床（客观）eg. The smoke is rising into the sky.Jane rose and left the room.The sun rises in the east and goes down in the west.The river has risen two feet because the heavy rain.raise为及物动词：举起，抬高，筹集，饲养，抚养（主观）eg. The box is too heavy，s
10、o I cant rais lift it.Were raising money for the poor children.The farmer raised some sheep and horses.He raised his head when he heard his name called.She raised her voice.4、discover和invent discover发现（发现以前没有人知道的东西，地方或事实等）eg. The new star was discovered by a Chinese student. invent发明，创造（指创造出世界上原本不存在
11、的事物）eg. Alexander Graham Bell invented the telephone.5、earth，soil，land和ground（1）earth：地球，泥土eg. We should do something useful to protect the earth. Trees can stop the wind from blowing away the earth easily.（2）soil土壤（主要指用于种植庄稼的）eg. The soil is good for growing rice.（3）land陆地（相对江、河、湖、海等），国土(可数)eg. Aft
12、er the bad boat journey，they were glad to arrive on land.A lot of rich land has changed into desert.（4）ground指大地的表面，地面，场地eg. The ground is covered with snow.6、nearly和almostnearly：（1）常与not连用eg. He nearly didnt hear what the teacher said.（2）常与数词连用eg. The boy is nearly two years old.（3）可修饰形容词，实义动词及部分代词
13、eg. The bottle is nearly empty.They nearly finished the work.Nearly all of them like playing basketball.（4）可与asas结构以及the same连用Its nearly as hot as yesterday.The two shirts are nearly the same.almost多表示时间、程度、距离、进度，可修饰more than，nothing，nobody，nowhere.no one，none，never等eg. I have almost never seen him
14、.、语法：不定代词和不定副词1、肯定句：somebody，someone，something，somewhere否定句/疑问句：anybody，anyone，anything，anywhere本身表否定：none，nobody，nothing.各种句式：everybody，everything，everywheresomething可用于表示请求许可等委婉语气的疑问句（希望得到肯定回答）eg.Would you like something to drink？No，thanks.（1）不定代/副词+形容词eg. Id like to live somewhere quiet. You cant
15、 get it anywhere else. Lets go somewhere nice for dinner. There is nothing wrong with the radio. I have something important to tell you.2、不定代词作主语，谓语动词单数Everything goes well.Nobody is in the classroom.Nothing is difficult if you set your mind on it.世上无难事，只怕有心人3、anybody任何人anything任何事情 anywhere任何地方 可用于
16、陈述句肯定句中范文1：As we all know，water pollution is becoming more and more serious. Some factories pour waste water into the rivers. As a result，it makes the water dirty and smell terrible. Most of fish in the water have died and we cant swim in the water. Water is very important to human beings，so we shou
17、ld do our best to protect and save it. Luckily，our government is taking measures to protect the water from pollution.范文2：My dear friends：Water is very important to human beings. Lets do something to protect and save it.First，we should protect our water resources and not pollute them. The government
18、should also pass laws against the water pollution. Second，we should save water in our daily life，turn off the taps in time，take a shower instead of a bath，and always remember to collect and reuse water. Third，lets try to spread the message about protecting and saving water. Make more people around us know the problem of water shortage and how to help solve it.Lets try our best to save water and planet.Student Union
