PPT模板下载：www.1ppt.com/moban/ “to do”The infinitiveFor me, to keep cats is so wonderful ! =It's wonderful for me to keep cats!But my mother tells me not to do that. The infinitive不定式:________否定形式：____________做非谓语，可充当除谓语外的其他成分，如主语、宾语、宾补、表语等to donot to doDiscussion (主语)What's your opinion?necessaryfunnydifficulttiringrelaxingexpensiveI think it is...to keep......easyCan you say more ? easy, keep a cat important for you, make the cat happynecessary, feed the cat on timehealthy, not put salt in cats' foodIt is =easy to keep a cat. It is important for you to make the cat happy. It is necessary to feed the cat on time. It is healthy not to put salt in cats' food.主语It is adj.(for sb.)to do sth. 1. It is a good choice__________(give) them fish since cats all like it.2. It takes a cat about 2 months ____ teeth and eat meat. A. grow B. to grow C. growing D. grewto giveBCatsto do 做为主语的重要考点有：做某事(S)（对某人来说）是...It is +____________ (for sb.)+__________做某事(S)花费某人多长时间It _______ sb.+_____________________adj./ n. to do sth takes some time to do sth Time |
