来自孙延明的问题
Ourteachersbelievethatifwe_______(那样做),wewouldconcentratemoreonourclouthes
Ourteachersbelievethatifwe_______(那样做),wewouldconcentratemoreonourclouthes
if虚拟语气有三种情况
对未来虚拟ifsb/sth+shoulddo/weretodo/did,sb/sthwoulddo
对现在虚拟ifsb/sth+did,sb/sthwoulddo
对过去虚拟ifsb/sth+haddone,sb/sthwouldhavedone.
所以本题应看成对未来或者是现在的虚拟,故用didso为好
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