老师：Hello everyone. Having Learned Unit 3, we will review what we've Learned in this unit. Unit 3 talks about the word online. And we know the word is becoming smaller because all the countries and all the people are connected by the internet. There's a sentence for you. The internet is truly a word is out frontiers.
老师：So how do you understand this sentence? You can exchange your opinions with your partners. Go. I think on one hand it means the internet benefits us in various fields. So what are the benefits of the internet? Now list the benefits of the internet on a piece of paper with your group members. You know, one of the greatest advantage of the internet lies in the quick access to a large amount of information. The internet has also made our life unbelievably convenient with all sorts of goods and services. Above all, the internet helps us establish and maintain social tires.
老师：So this is part of the understanding of the sentence. The internet is truly our word without frontiers. Is there any other meaning of the sentence? Think it's over. I think on the other hand, it means the internet. They bring us some disadvantages. So what are the disadvantages of the internet? Again, discuss it with your partners and then try to write down. I recommend that you write the disadvantages of the internet in this way by referring to the sentence structure and expression of the advantages. How I will give you some examples.
老师：1St, one of the disadvantages of the internet lies in the quick access to a large amount of if. What kind of information can you think of any adjectives, of course, something negative, right? So we can feel course held unhealthy or unreal information here.
老师：Then continue. The internet has also made people to crazy shopping online. You still remember the phrase we've Learned in this unit, some students are two playing computer games. Yes, be addicted to.
老师：Now the last part, above all, the internet leads people to establish what kind of social ties instead of accompany their family and friends. Our family and friends belong to real relationship, right? So we can I feeling the word virtual here. Virtual means something that is unreal.
老师：Now we have a thorough understanding of the sentence. The internet is truly a word without frontiers. That means there's no clear division between something bad and something worse. If we can't make full use of the internet, maybe we will suffer a lot. From this comparison, we can come to the conclusion technology is a double edged sword, including the internet and of course, the smartphone or the mobile phone.
老师：Now as with internet, the mobile phone also brings a lot of problems. Here is a short passage about the problems with the mobile phone. Now read the short passage and try
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