初中生英语课外短文阅读:Brushing and Flossing
编者按：牙线是用尼龙线、丝线或涤沦线来清洁牙齿的工具。来阅读以下这篇关于用牙线清洁牙齿的英语短文，学习一下一些语法知识吧!
Brushing and Flossing
(用牙线清洁牙齿)
Kevin had just finished dessert.
凯文刚吃完甜点。
It was a piece of dark chocolate, washed down with a glass of cold milk.
那是块被一杯冰牛奶冲过的黑巧克力。
Delicious!
美味!
He rinsed his mouth out with a glass of water, and then spit into the kitchen sink.
他用一杯水漱口，然后吐到厨房的水槽里。
He sat down at the dining room table and grabbed some floss.
他在餐台坐下，抓起一些牙线。
He carefully flossed his top teeth and then his bottom teeth.
他小心地用牙线剔上牙，然后是下牙。
Flossing was a chore.
剔牙是一件苦差事。
The floss almost always got stuck between two teeth in the upper back and two teeth in the lower front.
牙线总是卡在上后方的两颗牙和前下方的两颗牙之间。
Finally finished, he threw the frayed floss into the trash.
最后他把磨损的牙线扔到垃圾桶里。
He went into the bathroom and grabbed his electric toothbrush.
他走进卧室，抓起电动牙刷。
TV ads always show people putting toothpaste onto the entire length of the brush.
电视广告总是显示人们把牙膏放在牙刷的整个长度上。
Of course, that was to get them to use up the tube faster so they’d have to buy another tube sooner.
当然，那是为了让他们更快地用完这管牙膏，这样他们就会更快地买另一管。
Kevin put just a little toothpaste onto the brush.
凯文只在牙刷上挤了一点牙膏。
He brushed for about a minute.
他刷了大约一分钟。
He spent another 30 seconds brushing his tongue.
他多花了30秒刷舌头。
Then he spit out all the toothpaste, and gargled and spit again.
然后他把所有的牙膏都吐出来，然后又漱口，吐掉漱口水。
Brushing and flossing are such a pain, he thought.
他想，刷牙剔牙太痛苦了。
If they can put a man on the moon, why can't they invent something easier and faster than toothpaste and dental floss?
如果他们能把一个人送上月球，为什么他们不能发明比牙刷和牙线更简单便捷的东西呢?
重点知识讲解
【相关句型辨识】
He carefully flossed his top teeth and then his bottom teeth.
他小心地用牙线剔上牙，然后是下牙。
此句用副词 “carefully” 修饰动词 “flossed” ，
多数的副词都可以放在动词后面，如果是及物动词，一般就放在宾语后面。
例如：
He runs fast.他跑得很快.
频度副词通常都放在动词前面，但若句子里面有情态动词，助动词或动词be，就放在这类动词的后面。
例如：
He often does this.他常常这样做.
You must always bear this in mind.这一点你要常记在心里.
She is seldom ill.她很少生病.
知识讲解老师：Linda
公众号：小橙少儿英语
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