Lesson 18: Friendship Between Animals1) use 的用法2) warn 的用法I. Learning aims:Remember the new words: friendship, rhino, skin, warn, insect, relationship, survive, mzee, hippo, tortoise, truly, boundaryII. Learning important and difficult points:New Wordsfriendship rhinoskin warninsect relationshipsurvive mzeehippo tortoisetruly boundaryThink About It Do you think there is friendship between animals? What different animals have you seen living well together?Language Language PointsPoints1. I used to think only the same animals live together. 我过去曾认为只有相同的动物生活在一起。used to do 意为“曾经是；过去常常”，表示过去存在的状态，或过去经常做某事而现在不做了。 used 没有人称和数的变化。如：He used to go to work by bus. 他过去常常坐公共汽车去上班。I’m not quite used to the weather here yet. 我还不太习惯这里的天气。be used to + n. / doing sth. 意为“习惯于（做）某事”，注意这里的 to 是介词，后面要接 V-ing 形式。如 :This knife is used to cut bread. 这把刀子是用来切面包的。be used to do sth. 意为“被用来做某事”，这个结构表示被动。如：warn 作动词，意为“警告；注意”， warn sb. to do sth. ，意为“提醒（或警告）某人做某事”；warn sb. of sth. 意为“提醒某人某事”； warn sb. about / against sth. 或 warn sb. against doing sth. 意为“提醒 / 警告某人不要去做某事”。warning 是名词，意为“警告；预告；通知”。如：2. It also makes noise to warn the rhino about coming danger. 它也可以发出噪音来警告犀牛即将到来的危险。He has been warned of the danger of driving after drinking wine. 已经提醒过他酒后驾车的危险了。Exercises1. _________ can live in deserts.2. Linda is a little _________ than her elder brother. When you talk to her, her face turns red.3. _________ he was eating breakfast, I asked him for 100 yuan.4. We stood _________ and watched as the deer came cl...
