1.Is Jim at home by himself No.There's another boy_____with himA.playing B.play C.plays D.to getting为什么不选C?2.The sheep ____to the tree was found dead .How poor it is.A.tied B.tying C.was tied D.was tying3.Helen____ her keys in the office so she had to wait until her husband _____A.has left;comes B.left;had come C.had left；came D.had left;would come4.Tom ____ outOh,has he?What time ___he ____out?A.is;did;go B.went;is;going C.has gone;did;go D.is going;
1.Is Jim at home by himself
No.There's another boy_____with him
A.playing B.play C.plays D.to getting
为什么不选C?
2.The sheep ____to the tree was found dead .How poor it is.
A.tied B.tying C.was tied D.was tying
3.Helen____ her keys in the office so she had to wait until her husband _____
A.has left;comes B.left;had come C.had left；came D.had left;would come
4.Tom ____ out
Oh,has he?What time ___he ____out?
A.is;did;go B.went;is;going C.has gone;did;go D.is going;does;go
答案和为什么
1.A.强调的是进行时.
2.A.被动.
3.C吧.
4.C吧.
回答仅供参考.
1.There be 结构中动词不可能用第三人称单数,在此意境中应用进行时态.
AACC
1A There be doing句型
2A tied做后置定语修饰sheep 死了的羊
3C因为后面是had to 所以可以确定动作是发生在过去的过去，helen把钥匙忘在办公室这个动作发生在她老公回家前，是过去的过去，所以前面的空用过去完成时，后面用过去式
4CTom现在在外面 看回答是has he 所以提问也是一致的，出去的动作发生在过去，所以后面用过去式
1.选A 如果你选Plays,那么这个句子就有两个动词了,不行（一个是is,一个是plays）
2.A tied to the tree是过去分词做定语,那头绑在树上的绵羊被发现死了,多可怜啊
3.C had to wait用的是过去时,而Helen 丢钥匙是在她等之前,所以用过去完成时,后面她丈夫出现,时态和had应该一致
4.C 从回答可以看出问句应该用现在完成时
他出去的这个动作发生在过去,所以用一般过去式
“Tom出去了” “哦?是吗?他什么时候出去的?”