Don't worry，just follow the stage directions that you have learnt，and say your lines，and you will do fine!

不要担心，只要按照你学习的舞台说明做，说你的台词，你就会做得很好！

3．动名词短语作主语

First of all，laughing out loud helps improve your general fitness.

首先，大笑帮助你提高你的基本身体素质。

4．The next time引导时间状语从句

The next time you feel upset or disappointed，do not worry.

下次你感到沮丧或者失望时，不要担心。

重点词汇

1．This is because laughter strengthens the heart and the lungs.这是因为笑能增强心肺功能。

[归纳拓展]

(1)strengthen vt.加强；增强；巩固

(2)strength n．力气；体力；强项；优势

have the strength to do sth.有做某事的力气

build up one's strength增强实力

[语境助记]

(1)In order to strengthen his muscle，Mike goes to the gym regularly to do exercise.

为了强健肌肉，麦克经常去体育馆锻炼。

(2)He hasn't enough strength to lift the box.

他没有足够的力量搬起那个箱子。

[题组训练]

(1)为了让一个组里的成员做得更好，训练员首先要了解他们的优势和劣势。

To make members of a team perform better，the trainer first of all has to know their strengths and weaknesses.

(2)为了增强体力，比尔进行着大量的锻炼。

Bill was doing a lot of physical exercise to build up his strength.

(3)To his position in the country，he appointed his close friend Henry as head of the troops.

A．strengthen B．sponsor