Unit1 Grammar and usage -【帮课堂】2023-2024学年高一/高二英语同步学与练（译林版2020选择性必修第一册）

第2讲 选择性必修一Unit1 Grammar and usage 目标任务 课程标准 学习目标 围绕人与社会的主题语境，依托语篇，通过一系列英语学习活动，发展英语学科核心素养。 1．在语篇中观察、探究语法现象，自主归纳语法规则，并在新的语境和活动中正确使用语法。 2．通过训练与本单元语法相关的练习加强学生的英语运用意识。 02 预习导学 （一）课前阅读： 本单元的语法是动词不定式作主语和表语：To-infinitives as subjects and predicatives Below is a blog entry about eating out and eating at home. Find the sentences that use to-infinitives as subjects or predicatives.（黄色标注部分） Not that long ago, my first thought at mealtimes was to eat at a restaurant（作表语）. I was eager to try new restaurants. To eat out （作主语）was also a social activity, allowing me to enhance the relationship with my friends. I often ate out until last month, when I came across a cooking app. There are a variety of recipes in the app to choose from. They are uploaded by users, and offer detailed instructions so that others can follow them step by step. Most of the recipes include photos or videos, which are very useful for beginners. When I picked a popular recipe and gave it a try, I discovered that it was not that difficult to make a simple and tasty dish（作真正的主语）. In the last few weeks, I’ve thrown myself into home cooking, from boiling noodles in the pot to frying steak in the pan. I hardly eat out any more. Not only is cooking at home cheaper, but I can cook exactly what I want. It’s healthier too. No wonder people say nothing beats home cooking! Now I am good at cooking a couple of dishes. My plan is to invite my friends （作表语）over at the weekend to show them my new-found skills. I hope that they will like my cooking! To-infinitives as subjects To eat out was also a social activity, … To-infinitives as predicatives …, my first thought at mealtimes was to eat at a restaurant. （二）基础梳理 1）动词不定式作主语 构成与特点： 动词不定式的基本形式为：to＋动词原形（在某些情况下可以不带to）。 动词不定式没有人称和数的变化在，句中不可作谓语。动词不定式仍保留着动词的特点，可以有自己的宾语和状语，并有时态和语态变化。动词不定式具有名词、形容词、副词的特征，在句中可以作主语、宾语、表语、（后置）定语、宾语补足语和状语。动词不定式的各种时态、语态变化如下: 形式 语态 主动语态 被动语态 时态 一般式 to do to be done 完成式 to have done to have been done 进行式 to be doing / ＊完成进行式 to