To infinitive (1)To work in Changjun is a big challenge to Una.She needs to relax herself after school. So, she invited her friends to go shopping last weekend. But most of them had something important to do.To work in Changjun is a big challenge to Una.She needs to relax herself after school. So, she invited her friends to go shopping last weekend. But most of them had something important to do.To work in Changjun is a big challenge to Una.She needs to relax herself after school. So, she invited her friends to go shopping last weekend. But most of them had something important to do.To work in Changjun is a big challenge to Una.She needs to relax herself after school. So, she invited her friends to go shopping last weekend. But most of them had something important to do.Whats worse, Unas baby sons being sick was to upset her. She had to take care of him in the hospital, worried .But her brave son always sang and danced to delight Una.Whats worse, Unas baby sons being sick was to upset her. She had to take care of him in the hospital, worried .But her brave son always sang and danced to delight Una.Whats worse, Unas baby sons being sick was to upset her. She had to take care of him in the hospital, worried .But her brave son always sang and danced to delight Una.Whats worse, Unas baby sons being sick was to upset her. She had to take care of him in the hospital, worried .But her brave son always sang and danced to delight Una.What form of a verb appears most in the above passage?I. To-infinitiveThe to-infinitive can be used alone or as part of an infinitive phrase and the to-infinitive can serve as the subject, object, object complement, attribute, predicative or adverbial of a sentence. Review the basic sentences elements. 1. I was watching an English programme at 8 oclock yesterday.I-subject; was watching-predicate;an English programmer-object;at 8 oclock yesterday-adverbial 2. The games of 2006 World Cup are exciting.exciting-predicative 3. I lost my history book.history-attribute 4. He made the room clean and tidy.clean and tidy-object complement1.the to-infinitive used as the subject不定式作主语找一个真正的朋友是不容易的。To find a true friend is hard.满嘴食物地讲话是不礼貌的。To talk with your mouth full is impolite.1.the to-infinitive used as the subject不定式作主语找一个真正的朋友是不容易的。To find a true friend is hard.满嘴食物地讲话是不礼貌的。To talk with your mouth full is impolite.It is hard to find a true friend.1.the to-infinitive used as the subject不定式作主语找一个真正的朋友是不容易的。To find a true friend is hard.满嘴食物地讲话是不礼貌的。To talk with your mouth full is impolite.It is hard to find a true friend.It is impolite to talk with your mouth full.1)It is easy / hard/ difficult/ important/necessary/useful/ harmful/likely/unlikely/possible/ impossible/a risk/ (for sb) to do sth1)It is easy / hard/ difficult/ important/necessary/useful/ harmful/likely/unlikely/possible/ impossible/a risk/ (for sb) to do sth2) It is nice/ kind/ polite/ rude/ wise/stupid/silly/foolish (of sb) to do sth.Translation1. 说比做容易。2. 对我们来说在这个新班级学习很快乐。3. 你在背后嘲笑他是不明智的。Translation1. 说比做容易。 It is easier to say than to do.2. 对我们来说在这个新班级学习很快乐。3. 你在背后嘲笑他是不明智的。Translation1. 说比做容易。 It is easier to say than to do.It is happy for us to study in the new class.2. 对我们来说在这个新班级学习很快乐。3. 你在背后嘲笑他是不明智的。Translation1. 说比做容易。 It is easier to say than to do.It is happy for us to study in the new class.It is not wise of you to laugh at him behind his back.2. 对我们来说在这个新班级学习很快乐。3. 你在背后嘲笑他是不明智的。2.the to-infinitive used as the object不定式作宾语He wishes to sleep at least for 8 hours every day. 2.the to-infinitive used as the object不定式作宾语He wishes to sleep at least for 8 hours every day. 2.the to-infinitive used as the object不定式作宾语Sarah is determined to make an apology to Hannah.He wishes to sleep at least for 8 hours every day. 2.the to-infinitive used as the object不定式作宾语Sarah is determined to make an apology to Hannah.你知道后接不定式作宾语的动词有哪些吗？want, intend, desire, hope, wish, expect, long; manage, learn, decide, determine; attempt, pretend, choose; offer，promise， refusewant, intend, desire, hope, wish, expect, long; manage, learn, decide, determine; attempt, pretend, choose; offer，promise， refuse三想要，四希望，设法学会作决定。 企图假装要选择，提供承诺勿拒绝。Make sentenceswant, intend, desire, hope, wish, expect, long; manage, learn, decide, determine; attempt, pretend, choose; offer，promise， refuse三想要，四希望，设法学会作决定。 企图假装要选择，提供承诺勿拒绝。3 the to-infinitive used as the object complement 不定式作宾语补足语Lets invite the students in the long-distance to study together.3 the to-infinitive used as the object complement 不定式作宾语补足语Lets invite the students in the long-distance to study together.The wife always asks her husband to do the housework willingly.3 the to-infinitive used as the object complement 不定式作宾语补足语ask, beg, tell, teach; 要想请求先教会encourage, invite. 若要鼓励先邀请advise, persuade; 首先建议再说服allow, order, require, force, forbid; 五个许可或禁令want, wish, would like to, prefer,exp