牛津七上uni4单元知识点和练习及答案.docVIP

Unit 4 Season 【词汇讲解】 start to do sth. 开始做某事。 也可用start doing sth.两者没有明显区别，可以互换。同义词组还有begin to do sth./begin doing sth. 例如：Tom starts to read novels while his elder sister starts trying to write novels. Tom开始读小说，然而他的姐姐开始尝试写小说。 get warm 变暖。 get相当于become，两者都是系动词，后接形容词。 例如：Chinese people are getting richer and richer. see sb./sth. do ... 看见某人/某事做（过）...... 注意与词组see sb./sth. Doing...进行区别，前者强调“做了某事”，后者强调“正在做某事”，当句中出现always，often，never，sometimes,等频率词时，一般用前者。类似用法的动词还有：watch, look at, hear, listen to, feel等。 例如：We can often see people spit. Its not polite. on/in the tree 在树上 当某样东西为树的一部分时，用介词on. 例如：We like picking apples on the trees in my uncles garden. There are some birds in the tree. turn 变成 相当于become，两者都是系动词，后接形容词。turn常用于表示颜色的转变。 例如：After hearing the news, her face turned red immediately. in the north of 在...的北部，注意in/to/on the north of ...的区别 例如： Guangzhou is in the south of China. 广州在中国的南部。（广州属于中国的一部分，包含于中国内） Japan is to the east of China. 日本在中国的东面。（日本在地理位置上与中国不接触） Guangxi is on the west of Guangdong. 广西在广东的西面。（广西不包含于广东，但跟广东相接） 【句型讲解】 It is exciting to take a trip in spring.在春天旅游是一件让人兴奋的事情。 【解析】It is +adj(for/of sb. )+to do sth.对某人来说做某事怎么样 of句型中的形容词常用于描述人的性格品质；for句型中的形容词常用于描述事情的性质。 例如：It is kind of him to help the granny cross the road. It is exciting to make snowmen and spend time playing in the snow with your friends.堆雪人和跟朋友一起在雪地里玩耍是一件让人非常兴奋的事情。 【解析】spend time/money (in)doing sth. 花时间/金钱做某事 spend time/money on sth. 在某方面花时间/金钱 拓展句型：It takes sb. time/money to do sth. sth. cost sb. money sb. pay (money)for sth. 例如：It takes me two hours to do my homework every day.我每天要花两个小时做作业。 There is sometimes heavy snow.有时会下大雪。 【解析】there be 表示“有”。时态的变化体现在be动词上，如将来时可以表达为：there will be/there is going to be.注意there be 不能写成there have。 例如： There is going to be a concert in our school next Saturday. (√) There is going to have a concert in our school next Saturday. (×) The weather in the middle and east of C