PTE口语DI机经讲解，教你如何用模版拿满分

PTE口语评分在于流利度，发音和内容；并且流利度>发音>内容。所以DI中，最最关键的就是流利度，抓住了DI，就抓住了口语的三分之二。

How Solar Yard Lights Work?

其实这道图片题难度并不是很高, 因为标题已经给出来了, 所以introduction的部分直接读标题就可以了

然后description内容分成两块

首先描述solar light包括什么, 我们照着图片从上之下一一列举就好了：glass cover, solar cells, photoresistor, battery, controller board, LED and lamp cover.

接下来把用两句话简单描述原理：白天solar cells 把阳光转换为电能并储存在电池里, 晚上当photoresistor 检测到光线不足, LED的开关就会被打开。

Solar cells convert the sunlight into electrical energy and store it in the batterytemporarily

The controller will switch on the LED when photoresistor detects darkness

结尾我们继续套用万能模版, 把关键词替换成标题就可以完美收尾了。

这里面需要科普一下的是photoresistor

光敏电阻是利用光电导效应的一种特殊的电阻，简称光电阻，又名光导管。它的电阻和光线的强弱有直接关系。光强度增加，则电阻减小；光强度减小，则电阻增大。换句话说,photoresistor 可以检测到光的强弱从而控制开关。

参考答案

The image providesbrief information how solar yard lights work.

The solar light consists of solar cells, glass cover, photoresistor, battery, controller board, LED as well as lampcover.

It can be clearly seen thatduring daytime, the solar cells convert the sunlight into electrical energy and store it in the batterytemporarily. Moreover, the controller will switch on the LED when photoresistor detects darkness.

After analysing the key aspects, it can be concluded thatthe image shows crucial information abouthow solar yard lights workwhich is strongly supported by the data and facts.

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