现在完成时态1
用法:①过去发生的动作对现在造成的影响或结果:强调结果例:YesterdayIfinishedmyhomework,that’stosay,Ihavefinishedmyhomeworknow
②过去已经开始一直持续到现在的动作或状态:强调继续例:Ihavelivedheresince1990
现在完成时的构成havehas+过去分词3
现在完成时的四个基本句型肯定句Hehasfinishedthework
一般疑问句Hashefinishedthework
否定句Hehasnotfinishedthework
两回答Yes,hehas
No,hehasn’t
特殊疑问句Whathashedone
在下列情形下用现在完成时1九词语already①已经肯定句中或句尾例:Ihavealreadyfoundmypen
=Ihavefoundmypenalready
yet②已经否定句和疑问句句尾例:Ihavenotfinishedtheworkyet
Haveyouboughtacomputeryet
ever③曾经句中例:Haveyoueverseenpandas
never④从不句中例:IhaveneverbeentoBeijing
just⑤刚刚句中例:Ihavejustdonemywork
before⑥以前句尾例:Ihaveneverbeentherebefore
sofar⑦到目前为止例:Sofarhehaslearnt200words
howlong⑧多久例:Howlonghaveyoulivedhere
howmanytimes⑨多少次例:HowmanytimeshashebeentoBeijing
2两词组havegoneto去了某地例:HehasgonetoBeijing(去了北京)havebeento去过某地例:Hehasbeento