河南省开封市第三十三中学九年级英语全册 Unit 4 What should you do Section A The first period and The second period学案（无答案） 人教新目标版
【知识点详解】
虚拟语气是英语语法中的一个重要概念，它用于表达说话者对于假设情况的假设、愿望或推测。在Unit 4 "What should you do" Section A的学习中，重点是虚拟语气在非真实条件句中的应用。虚拟语气通过特定的动词形式来表示，如在if引导的条件句中，如果条件部分是过去时（be动词通常用were），主句则用would + 动词原形的形式。
1. 虚拟语气的基本用法：
- 条件句（If从句）：使用过去时态，be动词通常变为were。
- 主句：使用would + 动词原形，表示假设的结果。
例如：
- If I had a million dollars, I would donate it to medical research.
- If I were you, I would wear a shirt with a tie.
- If I were you, I would go a little later.
- If I were you, I would bring a small gift.
- If I were you, I would take a nice walk before sleeping.
- If I were you, I would talk to someone who looks friendly.
2. 数量表达：
- "百万"在英语中可表达为"million"，与"hundred"和"thousand"类似，可以使用"several million"等形式表示不具体的数量。
- 例如："two million dollars" (两百万美元), "millions of trees" (数百万棵树)。
3. 词汇学习：
- "医学的"形容词为"medical"，名词形式为"medicine"，相关的短语有"medical research" (医学研究) 和 "medical care" (医疗护理)。
- "吃药"在英语中为"take medicine"。
- "研究"的动词形式为"research"，如"He is researching a problem."。名词形式也是"research"，如"He is busy with research work."
4. 固定搭配：
- "如果其他的人都带来了礼物,我该怎么办?" 可以表达为"What should I do if everyone else brings a gift?"
- "如果……将会怎么样?" 通常用"If…, what would happen?" 或 "What would happen if…"来表达。
例如：
- 如果我不知道去医院的路怎么办？ "What would I do if I didn't know the way to the hospital?" 或 "What should I do if I don't know the way to the hospital?"
- 假如我一个人也不认识怎么办？ "What would happen if I didn't know anyone?" 或 "What should I do if I didn't know anyone?"
通过深入理解这些知识点，学生将能更熟练地运用虚拟语气进行假设性情境的表达，并掌握与医学、研究相关的词汇和表达方式，从而提高他们的英语沟通能力。
