when 和 if的区别It is said that me taxi drivers have metal wires stuck into the passager seats. and _______ a butten is pushed, the seat will give you an electric shock.China's laws do not seem to be the main problem, according to an officer. "Th

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when 和 if的区别It is said that me taxi drivers have metal wires stuck into the passager seats. and _______ a butten is pushed, the seat will give you an electric shock.China's laws do not seem to be the main problem, according to an officer. "Th
when 和 if的区别
It is said that me taxi drivers have metal wires stuck into the passager seats. and _______ a butten is pushed, the seat will give you an electric shock.
China's laws do not seem to be the main problem, according to an officer. "There are laws and the laws are very strict. ________ we want to launch a product, there are so many things we have to do."
两个空填什么?
when 和 if有什么区别?

when 和 if的区别It is said that me taxi drivers have metal wires stuck into the passager seats. and _______ a butten is pushed, the seat will give you an electric shock.China's laws do not seem to be the main problem, according to an officer. "Th
if 用来表示不能肯定某事是否会发生.
I'll see you in August,if I come to New York.
如果八月份我来纽约,我会来看你.
when 用来表示肯定某事会发生
I'll see you in August,when I come to New York.
八月份我来纽约时,一定来看你.
when 和 if 都可以用来表示经常发生的事情,两者没有多大差别.
如:If/when you heat ice,it turns into water.
if / when

when一般用于表示时间的当...时候,引导时间状语从句;而if则大可以表示所有“如果”,引导条件状语从句。表示从句是主句的前提。
第一句中 ,说一旦司机按下按钮,那么座位下的金属线就会放出电流来袭击乘客。(可见电击的前提是按下按钮)
第二句中,说得是中国的法律很严谨,如果想要投入制造,就会有很多事需要处理。(一般不会说投入制造是处理很多事情的前提,而是当要投入制造的时候,就会有许...

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when一般用于表示时间的当...时候,引导时间状语从句;而if则大可以表示所有“如果”,引导条件状语从句。表示从句是主句的前提。
第一句中 ,说一旦司机按下按钮,那么座位下的金属线就会放出电流来袭击乘客。(可见电击的前提是按下按钮)
第二句中,说得是中国的法律很严谨,如果想要投入制造,就会有很多事需要处理。(一般不会说投入制造是处理很多事情的前提,而是当要投入制造的时候,就会有许多事需要处理)
所以理论上前者用IF ,后者用WHEN。

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