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BEEnʲôʱ̬

have been doing ʱʱ̬.ɽʱ,Ӣ,ʵһֻʱ̬,乹Ϊ:+(have/has)+been+ʵڷִ+ɷ.ʾijһʱ俪ʼ,һֱ,߸ոֹ,߿Ȼ

仰ʱ,˼ǡڴ֮ǰʵ?˵ʱ֮ǰʲô,(ڻһӰ) ʱ,ṹhave+ȥִ(done) had+doneǹȥʱ,ʾڹȥʱǰʲôѾ,硰I had done my homework before I went bed yesterdayϴ֮ǰ(עʱ˵ʱѾǹȥʱ)Ѿдҵ beenbeĹȥִʽ.һhave been done ,ڽʱı̬.Ҳ ʱ .

beĹȥִ,ڸʱ̬,õľʽhave/has been doing beΪǵ˼,ͬ˳ƷΪam(һ˳),is(˳),are(ڶ˳)ʽ

,Ҫbeɶ,ʱ,ɽʱ,ɽʱ,

ʱ,һ㶼ô˵:have/has done have/has beenʱı̬ ʱʾ˵ʱΪֹ(Ϊֹ)Ѿ(һ)Ķ״̬.ȥijһʱ俪ʼһֱڲпܻĶ״̬.̬Ƕʵһʽ,ʾνĹϵ.̬:̬ͱ̬.Ƕִ,˵ɵ,Ҫ̬;Ƕij,˵ɵ,ñ̬.,ܸΪ,ɽСenjoyΪɽ ʲô׿׷,һᾡظ.ϣа ףѧϰ

been in ֻ һȥִʺһ ʲôʱ̬ Ҫǰhave had (haveʱ hadڹȥʱ) ԼӶʱʾij״̬ijһصһʱ ʱǹȥijһ㵽Ϊֹ ȥʱһ㲻 õʱйȥĶΪ ʾڴ˹ȥ֮ǰ˹ȥΪֹ have gong to ʱ ܼӶʱʱʱ̬кѵһ һҪѧ Ϊǻʱ̬ лиʱ̬ ʲôɽʱ ʱ ʱ̬ѧ ʱ̬͸ Ŭ

㲻Ҫhaving ing Իס,ʵʱ,ֻ˰״,Ҫingʽthe two students , ԭξhave been ,ԭԸij,the two students have been lost in the mountains for a week ,the two students were finally saved by the local police.ֻΪ˼,Եһγɷ.??Ǻ

is /am/are һʱ was /were һȥʱbeen beĹȥִ ʱ,͹ȥʱ

have been ʱ````` HavingΪھ,Һthe two students ϵ```

beenbeĹȥִ,Ҳʱ,hadhaveĹȥʽ,Ҳһȥʽ,had beenǹȥʱ

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