Changes in our lives（生活） are everywhere
In the past, people wrote to each other. They had to spend（花费） a lot of time waiting for the letters. But now we can contact each other by phone and computer. We can use WeChat（微信） or QQ. It's quick and easy.
In the past, we often went to markets and shops to buy things. But now we like to buy things online. We can buy things at any time if we want to. Now, I am teaching my grandmother how to shop online. She can't walk very far so it will be easy for her if she shops online.
In the past, the teaching tools （工具） were only chalks（粉笔） and blackboards. But now teachers use computers to teach students. Computers make study more colourful and interesting. Students can also do homework online.
