英语 (19 21:5:50)I think the boy____ already_______ his homework.A.does; do  B.did; do   C.is; doing  D.has; done选什么?

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英语(1921:5:50)Ithinktheboy____already_______hishomework.A.does;do  B.did;do  

英语 (19 21:5:50)I think the boy____ already_______ his homework.A.does; do  B.did; do   C.is; doing  D.has; done选什么?
英语 (19 21:5:50)
I think the boy____ already_______ his homework.
A.does; do  
B.did; do   
C.is; doing  
D.has; done
选什么?

英语 (19 21:5:50)I think the boy____ already_______ his homework.A.does; do  B.did; do   C.is; doing  D.has; done选什么?
选D
already,yet多数都用在完成时中
因为是I think所以从句用现在完成时

D
already 用完成时

already 是暗示用完成时态的信号 所以选D

D
already已经,通常用于完成时,故选D

D
完成时,因为有already,表示已经完成了
A
如果没有already可以选A表示强调
B
同A
C
如果没有already可以选,表示正在做

D. has; done
already已经
他是完成时的标志
完成时态强调对现在的影响
已经写完了,可以去玩了

already 是一般现在时态的标志词 所以用一般完成时态 故选D

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