音频讲解
Speaking 说话 (3)
It’s also important to watch your tone of voice (the emotion with which you speak) and avoid making sarcastic remarks or disparaging comments(very negative and destructive comments). If you must make a complaint, try to give constructive criticism (criticism that helps the situation improve). And if you need to ask a favor of someone, always do it politely – don’t forget to say “Please”!
同样重要的是要注意你说话的语气（你说话时的情绪），避免说讽刺的话或贬低的话（非常消极负面的评论）。如果你一定要抱怨，试着提出建设性的批评（有助于改善情况的批评）。如果你需要请别人帮忙，一定要礼貌地去做——别忘了说“请”！
知识点：
1. watch your tone of voice：注意你说话的语气
2. sarcastic remarks：讽刺的话
3. disparaging comments：贬低的话
4. make a complaint：抱怨
5. give constructive criticism：提出建设性的批评
6. ask a favor：请别人帮忙
Starting 开始 / Finishing 结束 (1)
Let’s get started with a common question: is there a difference between the verbs “start” and “begin”? There’s no difference in meaning – “I started studying English 3 years ago” is the same as “I began studying English 3 years ago” – but “begin” is a little more formal than “start.”
让我们从一个常见的问题开始：动词“开始”和“开始”有区别吗？意义上是没有区别的——“我3年前开始学习英语”和“我3年前开始学习英语”是一样的，但是“begin”比“start”更正式一点。
The phrase “let’s get started” is an informal way to announce the beginning of an activity. You can also say that something “got off to a good start” if it began well. Other collocations for a good start include an encouraging start or promising start – these expressions show that there is hope for good results in the future. For example, “The soccer team got off to a promising start, winning the first four games of the season.” 有个表达“让我们开始吧”是宣布一项活动开始的口语化表达。如果某事开始得很好，你也可以说它“有一个好的开始”。表示良好开端的其他搭配还包括令人鼓舞的开端或大有希望的开端——这些表达都表示未来有希望取得好的结果。例如，“这个足球队开局非常顺利，赢了本赛季的前四场比赛。”
知识点：
1. let’s get started：让我们开始吧
2. get off to a good start：有一个好的开始
3. an encouraging start：令人鼓舞的开端
4. promising start：有希望的开端
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