Part 1: 虚拟语气的语法概念
1. 真实条件句：主将从现
If it rains tomorrow, I will stay at home preparing for my IELTS test.
If time permits tomorrow, we’ll go shopping together.
2. 虚拟语气：明知不可而假设，从句时态退一格。
从句对现在虚拟：If I were you, I would marry him without any hesitation.
从句对过去虚拟：If you had come yesterday, you would have met that famous movie star.
从句对将来虚拟：If it should rain, the crops would be saved.
语法规则：
If 从句时态退一格，
主句用would/could等+动词原形V（对现在和将来的虚拟），
或者主句用would/could have done(对过去的虚拟）。
3.简化版的雅思写作虚拟语气
Without...,
Without the prevalence of long-distance flight, it would not be possible for us to study in a foreign country so easily.
Part 2： 正反论证的逻辑概念
1.论点：电给我们的生活带来了便利。
有了电，真方便...
没了电，看不见...
1.论点： 我对你的爱，那么真。
你是我的太阳，你是我的月亮，你是我生命中最重要的那一个。
没有你跟我在一起的话，我无法呼吸无法生活...
1.剑桥雅思8分官方范文中的虚拟语气正反论证范例
Research indicates that the characteristics we were born with have much more influence on our personality and development than experiences we have had in our life. Which do you think is the major influence?
The traits we inherit from our parents and the situation and experiences that we encounter in life are constantly interacting. It is the interaction of the two that shapes a person's personality and dictates how that personality develops. If this were not true, we would be able to predict the behavior and character of a person from the moment they were born.
Part 3： 虚拟语气与正反论证在雅思写作中的完美结合
1. 犯罪话题：
On the one hand, fixed punishments will have a deterring effect on crimes.... Without these fixed penalties for the crimes people are convicted with, they would be less afraid of the legal consequences of their wrongdoing, thus resulting in a much higher crime rate.
2. 慈善援助话题
Charity is not to gain profit or benefits, but to help others selflessly. If a charity organization did nothing to give a hand to people crying for help with bleeding legs just because they are not living next door, I would not donate a penny to them.