译林版七年级下册英语Unit 7知识点及语法归纳一、重点词组二、重要句型1、Believe it or not! 信不信由你!belive/think后可接that引导的宾语从句,当主语为第一人称,后接否定意义的宾语从句时,需要否定前移。eg. 我认为他不会通过考试。正:I don’t think/believe that he can pass the exam.误:I think/believe that he can’t pass the exam.2、We can send some books to them. 我们可以给他们送些书。(过去式sent)send用作及物动词,意为“寄(信等);发(电报);(派人)送”。send sb. sth.= send sth. to sb. (give/show/lend/pass传递)borrow sth. from sb. buy sb sth.= buy sth. for sb.拓展:①send up 发射②send for (派人去)请来3、Some children are not even able to pay for school. 一些孩子甚至不能付上学的钱。able形容词,意为“有能力的;能干的”。如:Your father is an able man.be able to 能;会。相当于can/could,但be able to 有一般将来时。sb. pay (sb.) for sth. 某人付给(某人)钱买某物过去式paidsb. spend +时间/金钱(in)doing sth./ on(doing) sth. 某人花费时间、金钱做某事。It takes sb. some time to do sth. 做某事花费了某人多长时间。sth. cost sb.+ 金钱某物花了某人多少钱4、He was brave enough to save his neighbour from a fire.他足够勇敢将他的邻居从火中救了出来。save 动词,意为“救;求助”,save . . . from意为“从……中救出……”。save还有“节省,节约;储蓄,保存”的意思。5、He was in hospital for two weeks. 他在医院住了两个星期。in hospital意思是“生病住院”,而in the hospital意思为“在医院里”。6、Keep your hair away from fire. 让头发要远离火。词组keep . . . away from sth表示“(使)不靠近或远离……”的意思。如:Keep the children away from the water. It’s dangerous. 不要让儿童靠近水。危险!7、When he is free, he often helps at the Helping Hands Club and does most of the computer work for the club. 当他有空时,他常常在帮手俱乐部帮忙解决大多数电脑问题。when/while引导时间状语从句,如果主句是一般将来时,when引导的句子用一般现在时表示一般将来时,if引导的条件状语从句,主句用一般将来时,从句用一般现在时。When you________(come) here tomorrow, can you bring me some fruit?If it ________(not rain) tomorrow, we will go boating on the lake.8、We look forward to hearing from you soon. 我们期待很快收到你的来信。hear from sb.(宾)意为“收到某人的来信”write (a letter) to sb. 给某人写信9.He is a member of our Project Hope and often takes part in activities like collecting clothes and books for children in need. 他是我们希望工程的一名成员,经常参加一些为有需要的孩子筹集衣物和书本的活动。be a member of……是……的一名成员in (great) need of sth. (急)需要某物take part in ……参加(活动)join 参加(组织,群体)10. protect +宾+from/against……保护……不受……三、语法复习I、情态动词can, could的用法(1)can的用法can表示某人具有某种能力,意思为“能,会”,也表示客观的可能性,是“能够,可能”的意思。后接动词原形,适用于所有人称。(2)could的用法could为can的过去式,表示“能,可以”,另外could可用来代替can,表示更为客气委婉的语气,用来提出要求,但回答时不能用could,而要用can.Could you swim when you were young? No, I couldn’t. (问能力)Could I smoke here? No, you can’t. (表示委婉的请求)其他回答:Go ahead./Help yourself./No problem./You’d better not./I’m afraid you can’t.II、感叹句的用法感叹句用来表示强烈的感情,能表达愤怒、悲哀、惊奇、厌恶和赞赏等。句末用感叹号“!”,读时用降调。在口语中常用省略句,后面的主语和谓语往往省略,有时只用一个词或词组表达。(1)以what开头的感叹句,what作定语,修饰名词(名词前可有其他定语),可数名词单数形式前要加不定冠词a(an)。句型:What (a/an)+adj.+n.(+s+v)! 如:What a clever boy(he is )! 多么聪明的孩子!(2)以how开头的感叹句,how作状语,修饰形容词、副词或动词。句型:How +adj./adv.(+s+v)!如:How blue the sky is ! 天空多么蓝啊!(3)疑问句形式的感叹句:有些感叹句采用一般疑问句的形式表示,以否定词开头,在口语中读降调。如:Isn’t it a lovely view ! 多美的景色呀!