雅思基础课程语法基础课程-第十五讲
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第十五讲 if条件句
条件状语从句 （conditional sentences）
能够发生或可能发生的事件
If 如果…，那么…
As long as 只要…，就…
Unless …，除非…
标点问题：
? If you wanna be cool, follow one simple rule.(当条件状语从句在主句之前的时候往往要加个逗号)
? Follow one simple rule if you wanna be cool.(当主句在从句之前的时候，不用加逗号)
1. If引导真是条件句
①主将从现
从句：if + 主语 + do/does 如果
主句：主语 + will + do 将会
eg:
? If you do what you love, money will follow.
②主情从现
从句：if + 主语 + do/does 如果
主句：主语 + must/can 就必须、能够
eg:
? If winter comes, can spring be far behind?
?
③主祈从现
从句：if + 主语 + do/does
主句：祈使句
否定：don’t do/ never
eg:
? If you can‘t say anything nice, don‘t say anything at all.
? In politics, if you want someone to make a speech, ask a man; if you want something done, ask a woman.
? If you are ever in trouble, don‘t try to be brave, just run, runaway.
2. If引导虚拟条件句
条件句（虚拟条件句）
①想象的情况，假设与现在事实相反
从句：一般过去时/were
主句：would + do
eg:
? If I ruled the world, everyday would be the first day of spring.
? If I ruled the world, every man would be as free as a bird.
? If today were the last day of my life, I would...
雅思口语高频句型
? If I were the decision-maker, I would...
? If I were the decision-maker, I would fine those who pollute air, water, and land.
②想象的情况，假设与过去事实相反
从句：had done
主句：would have done
eg:
? If we had missed that moment, we would have been strangers.
? If I had been you, I would not have married me.
should have
could have
would have
eg:
? I could‘ve killed you.
3. 其他条件句
If 如果…，那么…
As long as 只要…，就…
Unless …，除非…
雅思写作高分句:
? As long as people stay alert to the negative effects of it, this practice is worth trying.
? A country would not develop fast unless it opens to global competition.
雅思口语高频句型:
? If possible / necessary , ...
? If that‘s OK / everything could be fine , ...
? With.., / Without ...,
? Without dreams, life would have no meaning.
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