Unit 4 My Favourite Subject Section A (Grammar Focus-3d)语法精讲细练连词的用法【语法感悟】1.我们星期一上历史课和地理课。We have history and geography on Monday.2.我弟弟认为数学难但是很有趣。My brother thinks maths is difficult but interesting.3.——你为什么喜欢数学?——因为我觉得它很有意思。—Why do you like maths?—Because I think it’s interesting.【语法解读】【辨析】and,but,because单词用法例句and“而且、和”,用于连接两个意思对等的单词、短语或句子He likes Chinese and PE.他喜欢语文和体育。but“但是”,常用于连接两个有转折语气的单词、短语或句子I like PE,but my sister doesn’t.我喜欢体育,但是我妹妹不喜欢。because“因为”,用来解释直接的原因,回答 why 提问时必须用because—Why do you like PE?—Because it’s exciting.——你为什么喜欢体育?——因为它令人激动。【常用句型结构】1.and 连接两个分句时,分句本身都有自己的主语,如果第二个分句的主语与第一个分句的主语相同,则第二个分句中的主语可以省略。2.but 前后的两个句子、短语或单词在意义上形成鲜明对比,but 用来连接两个分句或两个较长的短语时,but 前面一般要加逗号。3.because 的基本句型:句 1+because+句 2,或 because+句 1,+句 2。*I buy a new computer,and it is very nice.我买了一台新电脑,并且它非常好。*I can’t go to school because I have a cold.我不能去学校因为我感冒了。*He has PE today,but he doesn’t have maths.他今天有体育课,但是没有数学课。【拓展】because 和 because of 辨析because 是连词,后面接句子;because of 是介词短语,其后接名词、代词、动名词等。*It is because he loves you.那是因为他爱你。*It is just because of money.那只是因为钱。【语法精练】Ⅰ.选择适当的连词填空(and,but,because)1.I don’t like reading,but I like watching TV.2.I’d like to go swimming with you,but I am busy today.3.My new shoes fit me well,and the color is my favourite.4.I come here because I want to talk to you.5.She gets the best grades because she works hard.Ⅱ.翻译句子1.她最喜欢的科目是生物和体育。Her favourite subjects are biology and PE. 2.他不喜欢数学因为它无聊。He doesn’t like maths because it’s boring. 3.我喜欢科学。它难,但是很有趣。I like science.It’s difficult,but very interesting.
