高中英语语法-情态动词篇课件（共22张）

英语语法难点 情态动词篇 1、shall & will 辨析 will表示愿意，shall表示应该 eg1: I will suffer all hardships for your sake. eg2: If he will come himself, we can have a sincere talk with him. eg3: All of you shall obey orders. eg4: Both parties shall strictly abide by the terms of the contract. 1、would & should 辨析 （一）作为时态助动词will和shall的过去时形式，构成动词的过去将来时。 （二）用在虚拟语气中： eg 1: If he were here now,he would help us. eg 2: It is suggested that the plan should be ready by Wednesday. （三）用作情态动词，would表示愿意，should表示应该 特别的，should+动词完成式：该做而实际没做的动作/不该做而实际上做了的动作 eg3:You should have come earlier. eg4:You should not have said that. 1、can & may 辨析 （一）can表示能力，may表示可能 eg1: Man can fly to the moon now. eg2: Money can not buy happiness. eg3: It may rain tonight or it may not. eg4: The visiting team may arrive tomorrow. （二）二者都能表示可以（指得到允许），基本通用 eg5:You can/may go home now. 但是，can比may常用，can多用于日常语言，may多用于正式场合 must疑问句 （主观上） 肯定回答：must / have to 否定回答：needn't / don't have to take shall need might should cigarette (2) practice: $$