基础英语语法PPT

时态现在时现在时是描述当前时间发生的事情的最基本时态。它包括以下几种形式：一般现在时He eats an apple every day现在进行时He i...

时态现在时现在时是描述当前时间发生的事情的最基本时态。它包括以下几种形式：一般现在时He eats an apple every day现在进行时He is eating an apple now现在完成时He has eaten an apple already过去时过去时是描述过去发生的事情的时态。它包括以下几种形式：一般过去时He ate an apple yesterday过去进行时He was eating an apple at that time过去完成时He had eaten an apple before that将来时将来时是描述将要发生的事情的时态。它包括以下几种形式：一般将来时He will eat an apple tomorrow将来进行时He will be eating an apple at 8 o'clock tomorrow将来完成时He will have eaten an apple before 8 o'clock tomorrow语态主动语态主动语态是表示主语是动作的执行者的语态。例如：He wrote a book last year.被动语态被动语态是表示主语是动作的承受者的语态。例如：A book was written by him last year.语气陈述语气陈述语气是表示陈述事实的语气。例如：He is a teacher.虚拟语气虚拟语气是表示与事实相反的假设或愿望的语气。例如：If I were you, I would go to the movies.祈使语气祈使语气是表示请求、命令或建议的语气。例如：Please sit down.从句名词性从句名词性从句是包含一个主语和一个谓语的复杂句子，其中主语和谓语都是从句。例如：He said that he would go to the airport.（宾语从句）定语性从句定语性从句是用来修饰名词或代词的从句。例如：The book that he wrote is very popular.（定语从句）状语性从句状语性从句是用来修饰动词或形容词的从句。例如：He will go to the movies when he is free.（时间状语从句）主谓一致主谓一致是指主语和谓语在人称和数上保持一致。例如：He eats an apple every day.（主语是第三人称单数，谓语也是第三人称单数）常用表达方式问候和告别HelloGood morning/afternoon/eveningGoodbyeSee you laterNice/Good/Great to see youWelcome backBe seeing youGive me a callCall me laterDrop in and see meDrop round for a chatSay hello to him/her/them. (from me)Say (that) you'll come if you can/if it's possible/if you've got timeSay (that) you'll do it if you can/if it's possible/if you've got timeSay (that) you're coming if you can/if it's possible/if you've got time感谢和道歉Thank youThanks a lotMany thanksThank you very muchThank you so muchThank you most kindlyI really appreciate itI'm truly gratefulIt'svery kind of youI'm sorryI apologizeI'm sorry for what I said/didI apologize for what I said/didExcuse me for what I said/didForgive me for what I said/did请求和建议Can/Could you please...?Will/Would you please...?It would be very kind of you if youShall we...?Let'sLet meLet him/her/themGo ahead andDo go andGo and...before it's too late/too lateGo and buy/get some...before it's too late/too lateGo and see/ask...before it's too late/too late