今天我们继续学习形容词比较级. Cheap (便宜的). Convenient (方便的). Cool (酷的). Difficult (困难的).  A smartphone is cheaper than a computer (手机比电脑便宜).  This shirt is cooler than my jeans (这件衬衫比我的牛仔裤更酷). Cheap - cheaper (便宜-更便宜. Cool - cooler (酷-更酷). Convenient - more convenient (方便-更方便). Difficult - more difficult (困难-更困难). Other courses are more difficult than You Speak Now (其他的课程比You Speak Now更难). 请用这些形容词造句并评论在下方，我们下次课见！