高一英语Module2Unit1TalesoftheunexplainedGrammar(2)•Structuresconnectedwiththepresentperfecttense:1)Itis(hasbeen)+aperiodoftime+since-clause
2)This(That/It)isthefirst(second…)time+that-clause(presentperfecttense)
3)This(That/It)isthebest/finest/mostinteresting…+that-clause
(presentperfecttense)
thePresentPerfectContinuousTense现在完成进行时态Form:have/has+been+doing_________________________________________pastperfectpastnowfuturepresentperfect_________________________________________pastperfectpastnowfuturepresentperfectcontinuousTheboystartedhavingdinnerfiveminutesago
Heisstillhavingdinnernow
Theboy________________(have)dinnersincefiveminutesago
hasbeenhavingThemanstartedworkinginthefieldhalfanhourago
Heisstillworkingnow
Theman__________________(work)inthefieldforhalfanhour
hasbeenworkingSummary1:1