1、Lesson 51: What Could Be Wrong?,Have you had any problems with your friends? When you have a problem with a friend, what do you usually do?,Warming up,figure v. 计算；认为,New words,1. situation,作可数名词，意为“情况、形势、局面、处境”，复数形式是situations。,e.g. We have never met this kind of situation before.,2. We used to stu
2、dy and play together all the time, but ever since last Friday. 我们过去曾经一起学习过、玩过，但从上个星期五就不一样了。,used to的意思是“过去经常”，后加动词原形，它可以用于各种人称之后。它的否定句式和疑问句式可以有两种变化形式： 否定句：used not to + 动词原形didnt use to + 动词原形 疑问句：Used + 主语 + to + 动词原形？Did + 主语 + use to + 动词原形？,e.g. He used not to live in this small village = He did
3、nt use to live in this small village. 他过去不曾住在这个小村子里。,3. Say hi to her when you pass her in the hallway at school. 当你在学校的走廊里从她面前走过时，要和她打声招呼。,句式say hi to意为“和打招呼”，其中的hi可用hello替换。,e.g. Bill said hello to me when he saw me.,类似句式还有：say goodbye to 向告别；say sorry to 向表示道歉；say thanks to向表示感谢；say no to拒绝；say y
4、es to 同意,e.g. Why did you say thanks to her again?,1. There are some new problems for you.（改为一般疑问句）_ _ _ new problems for you? 2. You cant leave your daughter alone at home.（改为同义句）You cant leave your daughter _ _ at home.,Are there any,by herself,Exercise1,按要求进行句式转换，每空一词。,3. Both of them know the co
5、rrect answer.（改为否定句）_ _ _ _ the correct answer. 4. She passed him in the hallway just now.（对画线部分提问）_ _ she pass him just now? 5. He is very friendly to his friends.（改为感叹句）_ _ he is to his friends!,Neither of them knows,Where did,How friendly,The third reading in the reader. The remaining exercises in the activity book. The next reading in the student book.,