Phrases; from…on； as a result； so...that，human race；in a way；with the help of；deal with ；watch over
Sentence patterns;
1 making decisions
I think /I don’t think that…
I believe that…
I’ve decided that…
Let’s decide…
let’s make a decision
2 Reasoning
The advantage/disadvantage is …
I agree/don’t agree…because …
Give me your reasons:
First……second.
What makes you think so?
As/since……,I think……
Grammar :现在完成时态被动语态的建构和用法
Over time I have been changed quite a lot.
First as a PC and then as a laptop , I have been used in offices and hones since the 1970s
Since the 1970s many new applications have been found for me
