I phoned you at 9:00 this morning but got no answer.l am sorry .l _____ the bell.l____in the garden .A haven't heard,must have been.B didn't have heard,must beC didn't hear,must have been D didn't hear,must be 选哪个?为什么?
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I phoned you at 9:00 this morning but got no answer.l am sorry .l _____ the bell.l____in the garden .A haven't heard,must have been.B didn't have heard,must beC didn't hear,must have been D didn't hear,must be 选哪个?为什么?
I phoned you at 9:00 this morning but got no answer.
l am sorry .l _____ the bell.l____in the garden .
A haven't heard,must have been.
B didn't have heard,must be
C didn't hear,must have been
D didn't hear,must be
选哪个?为什么?
I phoned you at 9:00 this morning but got no answer.l am sorry .l _____ the bell.l____in the garden .A haven't heard,must have been.B didn't have heard,must beC didn't hear,must have been D didn't hear,must be 选哪个?为什么?
选C
I am sorry .I didn't hear the bell(at that moment).I must have been in the garden .
没有回复的原因是(当时)我没有听到铃声响.MUST表推测,用完成式表过去时间里发生的行为或动作.
C
didn't hear 是没有听到过去时态。must have been是我当时一定是在做什么。must be 是一定是什么。
C
C
我没听见铃声,我肯定在花园里。
此类造句都这么说,想那么多语法其实也没用,关键在于语感。
多看点英文文章就有了。