1. 开头万能句子：In today's society, having a good command of English has become increasingly important. (在当今社会，掌握好英语已经变得越来越重要了。

)2. 结尾万能句子：In conclusion, we can say that (总之，我们可以说)；Therefore, it is crucial for us to (因此，对我们来说非常重要的是)；In a word, (总之，一句话)。