1、七年级英语上册Unit4 语法和写作知识讲解一、语法连词and、but及because(一)连词是用来连接单词、短语、从句或句子的词。连词是一种虚词，不能独立担任句子成分，在句子和句子的各种成分中起连接作用。Eg: Lily likes English but she cant speak well. 丽丽喜欢英语但是她说得不好。(二)And为表示平行关系的连词，该连词连词前后的成分一般是对等的。Eg: I am doing homework and he is doing homework, too.我正在做作业并且他也正在做作业。(三)But为表示转折关系的连词，该连词前后的成分是对等的，
2、但意义是相反的。Eg: I dont have a soccer ball, but my brother does. 我没有足球但是我哥哥有。(四)Because为表示因果关系的连词，该连词前后的成分是对等的，但前后两分句一个表示原因，一个表示结果。通常because引导的句子表原因。Eg: Im late because it rained heavily.我迟到因为雨下得很大。【即学即用】( B )1.He is so fat, _ he dont want to lose weight.A.and B.but C.so D.or( C )2.I like history _ I can
3、 learn about more information about the past.A.and B.but C.because D.so( A )3.She is from China _ she is ten years olD.A.and B.but C.because D.so二、写作话题一：Write a post about your subjects .* 提示：1.This term, I have .2.I like .because its .3.My favourite subject is .because its .4.I want to be a/an .in
4、the future.5.Im good at.* 写作步骤定文体(记叙文)、人称(第一人称)、时态(一般现在时)Im a student in Beijing.This term, I have Chines, history, maths, English, music, PE, geography, biology and art.I like English because my English teacher is excellent, she often tells us some stories in English and she also works hard to make the lessons more interesting.My favourite subject is history because Im interested in the past life.I want to be a archaeologist in the future.I dont like math because its too difficult for me, but I know it is useful, so I must work harD.What is your favourite subject? Can you tell me.1
