57．happy（比较级和最高级是happier；happiest）adj．①＝feeling content，意为“愉快的；幸福的”。例如：We are very happy．我们很愉快。How happy you are！你们多幸福啊！②＝glad；pleased，意为“快乐的；高兴的”。例如：She is a happy girl．她是个快乐的小姑娘。He was very happy to hear that．听到那消息，他很高兴。
与happy连用的常见句型：
①Happy New Year！新年快乐！
②Happy birthday to you！祝你生日快乐！
③be happy to do sth．高兴做某事
④be happy about ／at sth．因某事而感到高兴。
58．have to ＝to be obliged to；must，意为“不得不”。例如：We have to get there on time．我们必须准时到达那儿。I have to go to school on Monday．星期一我得去上学。It's late．We have to hurry up．时间不早了，我们得赶紧。
59．have用作使役动词，常用于句型“have ＋宾＋宾补”，表示“请（某人）做（某事）”，宾补为省略了to的不定式、过去分词、形容词或现在分词。例如：
① ＝to permit；allow，意指“允许”。例如：He won't have his son do such things．他不允许他的儿子做这些事。
②have sb．do sth．＝make sb．do sth．意指“使；叫；让”。例如：I'll have the gardener plant some trees．我要让园丁种些树。
③have sth．done ＝arrange for sth．to be done，意指“使（某事）完成；使发生”。例如：She had her bike repaired．她请人修好了自行车。
④听任；保持：It is too cold，he must have the windows closed．天气太冷了，他得让所有的窗户都关着。Mrs Baker had her light burning all the night．贝克夫人任由灯彻夜亮着。
60．hear（过去式和过去分词是heard ；heard）vt．①＝no- tice sounds with ears，意指“听；听见”。例如：I heard a loud noise．我听见一声巨响。They heard a knock at the door．他们听见有人敲门。② ＝receive information，意指“听说；得知”。例如：I heard that he was ill．我听说他病了。I heard that his son had gone to London．我听说他儿子到伦敦去了。I'm sorry to hear that．听到这个消息非常遗憾。③＝ listen to；pay attention to，意指“注意听；听取”。例如：She listened but could hear nothing．她注意听了，但什么也听不见。You had better hear what I'll say．你最好听听我要说些什么。
see，hear，watch等词可以后接复合宾语。其宾语补足语可以是不带to的动词原形，也可以是V ＋ing形式，但二者的意思不同。前者是指看见或听见某种事件或动作的全过程，或者过去的动作；而后者则是指现在的动作。试比较：
She saw her son get on the bus．她看着儿子上了车。
She saw her son getting on the bus．她看见儿子在上车。
hear的宾语补足语一般接不带to的不定式，但在用于被动结构时要加to。例如：She is often heard to sing this song．人们常常听到她唱这首歌。
