八下第六单元英语Section A-2.pptVIP

Unit 6 An old man tried to move the mountains. How does the story begin? What happened next? Why was Yu Gong trying to move the mountains? Who is the Monkey King? What cant the Monkey King do? Once upon a time, there was a very old man ... Grammar Focus As soon as the man finished talking, Yu Gong said that his family could continue to move the mountains after he died. Because they were so big that it took a long time to walk to the other side. He is the main character in Journey to the West. He cannot turn himself into a person unless he can hide his tail. Conditional clauses with if and unless 含有if的复合句由两个分句组成；if 为连词，引 导条件状语从句，另一句为主句。 如果谈论的是某一个动作发生后势必会产生某个 结果，那么主从句都用一般现在时态。 e.g. If you boil water, it becomes steam. If you drop a glass, it breaks. If you heat metal, it melts. If you run, you sweat. If you put wood into water, it __________ (float). floats Unless 的用法 如果谈论的是‘如果’某一个动作或事情发生后，很 可能将会产生某种结果，那么在复句中主句的动词 用一般将来时，而if从句仍然是一般现在时。 e.g. If it rains, we won’t take a hike tomorrow. He will get up school on time if the clock goes off. If he arrives in Hong Kong, he will call me. If you don’t start early, you ____________the beginning of the film (miss) will miss ●若 if 条件句放句首，从句后面要加逗号，和主句 隔开。 ● unless 与if 用法相似，相当于if…not e.g. You will fail the exam if you don’t prepare for it.→ You will fail the exam unless you prepare for it. If he doesn’t look up the word in the dictionary, he won’t know its meaning. → He won’t know the word’s meaning unless he looks it up in the dictionary. She will miss the train unless she _______ up early. gets if和unless的用法 一般情况下，unless相当于if…not，可以互换。用一般现在时代替将来时。 I wont let you in unless you show me your pass = I wont let you in if you dont show me your pass.如果你不出示通行证，我就不让你进来。 如果主句描述的是情感或情绪活动方面的内容，if…not结构不能换成unless。如： Ill be quite glad if she doesnt come this evening. 她今晚如果不来我很高兴。 1.Unless?you?take?more?care,?you’ll?have?an