To begin with, ... What’s more, ... Last but not least, ...
2 强调一下It is important for sb to keep a good mood under whatever circumstances. 在任何环境下保持一个好的情绪是很重要的
3 转折一下However, wonderful as online shopping is, it also brings many problems too. 尽管…，但…
4 不但 而且By taking part in social practice, undergraduates can not only improve one’s academic studies, but gain many abilities which he will never be able to get from the textbooks. 通过做某事，大学生不仅能够提高他们的专业能力，而且能获得从课本上得不到的能力.
5 举个例子A common example, which is frequently cited, is that online payment has made it possible for us to shop around without the trouble of carrying a lot of cash. 一个常被提及的例子是，在线支付使我们在购物时免受带现金的麻烦，变成可能。
6 总结In brief, taking into account all of these factors, we may reach the conclusion that a perfect balance of academic study and extracurricular activities will make our life more enjoyable and colorful. 简要地说，考虑到上述所有因素，我们可以得出一个结论…
