现在完成时专项练习1
现在完成时的结构:______________________________2
现在完成时的定义①_____________________________②____________________________2
写出havebeento,havegoneto,havebeenin的用法(并说出它们的特征):_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________3
尽可能多的写出表示用现在完成时的标志性单词或者词组:______________________________________________________________________________________________________________________________________________________________4
写出短暂性动词和其对应的延续性动词:buy-----leave-------turnon/off------borrow-----join---------finish-------arrive------die----------fallasleep----stop--------getmarried---------catchacold----begin/start-------come/go------