1、Unit 2 Lets taLk teensUnit 2 Lets taLk teensGrammar and UsageSimpleSimple,compound and,compound and complex sentencescomplex sentencesWatch a video.Try to describe the scene!他们要去和人打架 他们要去和人打架，但是我不知道为什么。我想知道他们要去和谁打架他们要去和人打架。They are going to have a fight with someone.他们要去和人打架，但是我不知道为什么。They are going
2、 to have a fight with someone,but I dont know why.I dont know why they are going to have a fight with someone.我想知道他们要去和谁打架。I wonder whom they are going to have a fight with.Sentence:a set of words that is complete in itself,typically containing a subject and predicate,conveying a statement,question,
3、exclamation,or command,and consisting of a main clause and sometimes one or more subordinate clauses.简单句简单句就是只含有一个主谓结构只含有一个主谓结构且句子各成分都只由单词或短语构成的独立句子或分句。在简单句中主语和谓语是句子的主干，是句子的核心。A simple sentence consist of one independent clause that contains a subject and a verb.简单句简单句就是只含有一个主谓结构只含有一个主谓结构且句子各成分都只由单词
4、或短语构成的独立句子或分句。在简单句中主语和谓语是句子的主干，是句子的核心。A simple sentence consist of one independent clause that contains a subject and a verb.并列复合句并列复合句是由两个或两个以上并列而又两个或两个以上并列而又独立的独立的简单句简单句构成。两个简单句常由并列连接词连在一起；但有时不用连接词，只在两个简单句之间用分号进行隔开。A c o m p o u n d s e n t e n c e contains 2 or more main clauses.Independent Claus
5、eCoordinating ConjunctionsIndependent ClauseCompound Sentence更高级的并列连词：1.表并列：not onlybut also,neithernor等；2.表转折：yet,while,however,nevertheless等；3.表选择：otherwise,not.but.,either.or.等；4.表因果：thus,therefore等。Linking words:for,and,nor,but,or,yet,soJack likes chicken,and he loves Nandos.Jack likes chicken,b
6、ut he hates turkey.When to use a comma before conjunctions:These are both examples of compound sentences.In each example,each sentence features two independent clauses,not one.Note that there is now a comma before the“and”and the“but”.)Jack likes chicken,and he loves Nandos.Jack likes chicken,but he
7、 hates turkey.When to use a comma before conjunctions:These are both examples of compound sentences.In each example,each sentence features two independent clauses,not one.Note that there is now a comma before the“and”and the“but”.)主从主从复合句复合句由一个主句和一个或一个以上的从一个主句和一个或一个以上的从句构成句构成。主句主句为句子的主体,从句从句只用作句子的一个
8、次要成分,不能独立成为一个句子。A complex sentence contains one main clause and at least one subordinate clause.从句通常由关联词关联词引导,并由关联词将从句和主句联系在一起。按其在复合句中的作用,分为名词性从句、定语从句和状语从句等。The word used to link an independent clause to a dependent clause is called a subordinating conjunction.The most common subordinating conjuncti
9、ons are although,because,before,even though,if,since,until,when,etc.noun clausesnoun clausesadverbial clausesadverbial clausesattributive clauseattributive clausethat,which,who,if,whetherbefore,after,since,when,if,because,though,unlesswhich,who,that,whose,where,when When to use When to use simple,co
10、mpound complex sentences:Match each sentence with the correct type in the table below.Write down the numbers.(1),(7),(9),(10),(11),(12)(2),(3),(4),(6)(5),(8),(13)A simple sentence is made up of one independent clause which has one subject-verb combination.A compound sentence contains two or more mai
11、n clauses.We use connecting words such as(1)_,or,(2)_,so or for to link the clauses.A complex sentence contains one main clause and at least one subordinate clause.A subordinate clause can be the subject,predicative,object,attributive or adverbial of the sentence.andbutWorking out the rulesB1Below a
12、re some tips on how to use TeenHealthWeb.Join each pair of sentences to form a compound or complex sentence.1.Your password should be more than eight letters or numbers.This makes it difficult to guess._Your password should be more than eight letters or numbers,because this makes it difficult to gue
13、ss.“This”指代前面整个句子3.Describe your problems clearly.Other people can understand them easily._Describe your problems clearly,so other people can understand them easily.2.Posts should not give out personal information.They should not include advertisements._Posts should not give out personal information
14、,and they should not include advertisements.“They”指代PostsCauseEffect4.The forum experts will reply to you.They see your posts._5.What do you think of our forum?Let us know by email._The forum experts will reply to you as soon as/when/once they see your posts.Let us know what you think of our forum b
15、y email.ConditionResult此句指代“know”的宾语B2Teresa is talking to her friend Jack about her parents.Complete the conversation with the correct connecting words in the box below.Teresa:Im under a lot of stress these days(1)_ my parents are always comparing me with my friends.Theyre never satisfied(2)_ I do
16、better than all my friends in schoolwork,in hobbies,in everything!Jack:Thats terrible.I can see _ youre anxious.You should tell your parents(4)_ youre trying your best.Theres no point in comparing you with others all the time.Everyone is unique!and because but how if that unless why becauseunlesstha
17、twhyB2Teresa:I know,(5)_ my parents dont seem to understand that.(6)_ they continue like this,Ill lose confidence in myself.Jack:I think your parents should be more flexible.Talk to them.Let them know(7)_ you feel.Sometimes,competition can push you to do better.Right now,its just making you anxious and having a bad influence on your performance.Teresa:Thank you,Jack.Ill try talking to my parents.Jack:Cheer up,Teresa.Theyll understand(8)_ everything will turn out all right!butIfhowandthank yoUthank yoU
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