介绍:

Part 1 Warm-it-up 热身准备

plain /pleɪn/ adj.朴素的；简单的

I love Japanese seafood because the way they cook is very simple and the food looks so fresh and plain.
我喜欢日本海鲜，因为我觉得他们处理食材的方法很简单，食物看起来很新鲜可口又很简单整洁。
chocolate /ˈtʃɑ:klət/ n.巧克力
He bought a box of dark chocolate as a gift on Valentine’s day for her but she refused to accept.
情人节那天，他给她买了一盒黑巧克力做礼物，但是她却不接受礼物。
a bar of 一块；一条
She likes having a bar of chocolate and a cup of coffee while she is reading a book.
她喜欢边看书边喝咖啡吃巧克力。
sugar n.糖类
Children should not be allowed to eat too much chocolate because sugar will destroy their teeth.
儿童不应该吃太多的巧克力，因为糖类会损害他们的牙齿。
calorie /ˈkæləri/ n.卡路里（热量单位）
A fried egg contains about 100 calories.
一个煎蛋大概包含一百卡路里。
fat n.脂肪
She walks for thirty minutes to burn off body fat every night after dinner.
她每天晚饭之后都会散步三十分钟来燃脂。
caffeine /ˈkæfi:n/ n.咖啡因
Don’t take too much coffee and chocolate because there’s caffeine in them.
不要喝太多咖啡和吃太多的巧克力，你会对咖啡因上瘾的。

Part 2 Check-it-out 趁热打铁
To eat or not? 吃还是不吃呢？
Simple and plain /pleɪn/ food is often the best but it is not always true. For many of us food is a need. For others, food is a friend. And to some others, food is an enemy /ˈenəmi/ .
简单朴实的食物最好的，但是这个理论偶尔也不对。对于很多人来说，食物是基本需求。但是对于有些人来说，食物是朋友。对其他人来讲，食物是敌人。
Let’s say you’re feeling down. You had a tough day or a fight with a best friend. You decide to treat yourself to a bar of chocolate –nothing like chocolate could cheer you up.
假如你心情不好。一整天过得不开心或者跟朋友吵了一架。你决定奖励自己一块巧克力--没有什么食物更能比巧克力更能使人开心了。
But you’re getting a lot of calories /ˈkæləri/. That’s because chocolate /ˈtʃɑ:klət/ bars have much fat and sugar. They are going to take a long time to get out of your body. And caffeine /ˈkæfi:n/ in the chocolate will make you feel happy and relaxed for a while but it will make you feel bad when you’re getting fat.
但是不幸的是，你将会吸收很多卡路里。那是因为巧克力含有大量的脂肪和糖类。他们会在人体内部停留很长时间。巧克力中的咖啡因会在短时间内使得你感到幸福和放松，但是最后当你开始变胖的时候，你就会感觉比较槽糕。

Part 3 takeaway 词汇小技巧 常见词性的缩略:

n. (noun) 名词 book bread adj.(adjective) 形容词 plain long v. (verb) 动词 feel make adv. (adverb) 副词 quickly fast prep. (preposition) 介词 for in