Unit 1 Whose bag is this?课前准备. 写出下列短语1. 欢迎回到学校_ 2. 首先_3. 从现在起 _4. 从那时起_5. 小心(对待)_ 6. 让我想想_ 知识讲解1. 【观察例句】 1).Welcome back to China. 2).Welcome back home.welcome 可以做_词。意为_。welcome back to +_; welcome back + _ ，意为：欢迎返回welcome 也可以做_词，意为“欢迎，接待”，give sb a warm welcome “热烈欢迎某人”【拓展】Youre welcome 常用来回答对方的感谢，意思是_，常作为thank you的答语，相当于_/ _/ _。【练习】(1) 欢迎回到这里。_ (2) 感谢你们的热情接待。_2 . first of all 意为_，常在句首做状语，强调首要的事情或动作, 表示重要性上的先后。【练习】首先，你应当完成你的作业。_3. 【观察例句】 -Whose flowers are these? -They are mine. Whose are those books?whose意为_，一般用于提问物品的_。常用句子结构：Whose +_+谓语动词+其他？= Whose+谓语动词+名词？回答时常用名词性物主代词或名词所有格。【练习】1.这是谁的钢笔？是她的。_2. The eraser is his.(就画线部分提问) _ _ is this?4. 【观察例句】 Everyone, please be careful with your things from now on.(1) be careful with sth./ sb小心（做/ 处理/ 对待）某物 be careful to do sth. 小心做某事be careful = look out/ watch out/ take care 当心【练习】贝蒂，请保管好你的蜡笔。Betty, please _ _ _ _ _.(2) from now on 意为_【练习】从今以后我们必须努力地学习英语。_(3) everyone 是_词，意为_，它在句中作主语时，谓语动词用_。常见的不定代词还有somebody, someone, anybody, anyone, nobody, no one, something, anything, nothing, everything。 形容词修饰不定代词时，要放在不定代词之_. 【练习】1） 你有什么重要的事情要做吗？Do you have _ _ to do? 2） _(be) everyone here today?5. 【观察例句】 Heres a purple wallet! Here you are!这是一个以here, there 开头的倒装句。如果主语是_，其谓语动词要放在主语之前，即：Here/ There +谓语动词+ 主语，谓语动词的形式取决于后面的名词。但是如果主语是_，句子则部分倒装，即：Here/ There+主语+谓语动词【练习】 (1) Here _ some nice gloves. / Here _ a pair of gloves. （be） (2) 他来了。_ (3) 你的橡皮擦在那。_巩固练习.根据句意从方框中选择恰当的单词填空，有的需要变换形式，每词限用一次。whose, lose, mine, my, your, yours, her, hers, careful, purple1. Tony, is this _ bag? No, its not _. Let me ask Lingling, maybe its _. 2. _ pen is this? Its _ pen. I am looking for it.3. What color are Marys shoes? _ shoes are _.4. Where is Mr Smith? He is talking to a boy at the _ and found office. 5. Is this sweater _, Tom? Please be _ with your things. Thanks a lot. I will. .根据汉语意思完成下列英语句子，每空一词(含缩略形式)。1. 首先，让我告诉你这个消息。_ _ _, let me tell you the news.2. 买一套房子要花一大笔钱。It takes _ _ _ money to buy a house.3. 这小男孩正面带微笑地看着我。The little boy_ _ _ me with a big smile.4. 从现在开始我们要尽量做得更好。_ _ _, we will try to do better.5. 让我想想，哦，是我的。_ _ _. Oh, theyre _.6. 这台电脑是Betty的吗？不，不是她的。是Kate的。 Is the computer _? No, it isnt _. Its _.3