相关简介
这份PPT课件聚焦人教版高中英语必修一《Sports and Fitness》单元Period Four的核心语言知识点，重点讲解diet、stress等关键词汇的用法、搭配与语境串记，同时梳理cut out等短语动词的常见含义。课件通过英英释义、例句对比和情景记忆，帮助学习者在掌握词汇意义的基础上，提升实际运用能力。
课堂新知讲练
1. diet n. 规定饮食；日常饮食 vi. 节食
Paraphrase: a way of eating in which you only eat certain foods
(P42) I worried about my weight and tried every new diet I read about online. 我担心体重，我也尝试了在网上看到的每一种新的减肥食谱。
Unless you keep a balanced diet, you will put on weight. 除非你保持均衡的饮食，否则将会增加体重。
Have you been on a diet? You've lost a lot of weight. 你最近在节食吗？你瘦了好多。
She would take more exercise rather than go on a diet. 她宁愿多做运动也不愿节食。
2. stress n. 压力；紧张；重音 vt. 强调；重读；使焦虑不安 vi. 焦虑不安
Paraphrase: continuous feelings of worry; the special attention or importance
(P43) Stress 压力
He stressed the importance of a good education. 他强调了接受良好教育的重要性。
Some young people live a hard life under the stress of the modern life. 有些年轻人在现代生活的压力下过着艰难的生活。
When I was a child, mother put great stress on/upon my proper behaviour. 我小时候，妈妈特别强调我要行为端正。
She finds her new job very stressful, but she will never give it up. 她发现她的新工作压力非常大，但她绝不会放弃。
语境串记
After a stressful week of work, all the employees were extremely stressed and tired. They complained that few could work efficiently under stress. 在紧张的一周工作之后，所有的员工都非常紧张和疲惫。他们抱怨说，很少有人能在压力下高效地工作。
3. cut…out 停止做（或使用、食用）；剪下
(P42) Rather than cutting out the foods I enjoyed, I added healthy foods to my meals. 我没有停止吃我喜欢的食物，而是在我的饮食中添加了健康的食物。
Don't cut in when others are talking. 别人说话时别插话。
Don't cut down the tree that gives you shade. 不要砍倒给你遮阴的树。（不要忘恩负义。）
The town was cut off from the rest of the world due to heavy snow. 大雪使这个城镇与世隔绝了。
As we were talking, she asked whether we could cut across the square. 我们正在谈话时，她问我们是否可以抄近路穿过广场。
