Unit1TheChangingWorldTopic1Ourcountryhasdevelopedrapidly
SectionBA:HaveyoubeentoBeijing
B:Yes,Ihave
/No,Ihaven't
A:HaveyoubeentoHangzhou
HasMariabeentoherhometown
Yes,shehas
ShehascomebackfromCuba
Shetookpartinsomevolunteeractivitiesduringsummerholidays
Sheishappybecauseshehaslearntalotfromit
volunteeractivitiesdisabledchildrenlearn
from…从……中学习e
I’velearntalotfromthestory
我从这个故事中学到了很多
Listento1aandtickwhatMariahasdone
ActivitycleanroomsforthedisabledchildrenfeedthedisabledchildrencookforthedisabledchildrentravelMaria√A:HassheB:Yes,shehas
No,shehasn’t
cleanedroomsforthedisabledchildren
fedthedisabledchildren
cookedforthem
traveled动词的过去分词PastParticiple√×√×beenavolunteer
beavolunteer现在完成时:have/has+动词的过去分词P31amp3VerbPastTensePastParticiplecleancleanedcleanedjumpjumpedchattedchattedflyflown