作业帮一道初四英语选择题Tom wanted to know__________ shanghai to see the World EXpo.A.if they have gone toB.if had they been toC.if they had gone toD.if have they been to
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一道初四英语选择题Tom wanted to know__________ shanghai to see the World EXpo.A.if they have gone toB.if had they been toC.if they had gone toD.if have they been to
一道初四英语选择题
Tom wanted to know__________ shanghai to see the World EXpo.
A.if they have gone to
B.if had they been to
C.if they had gone to
D.if have they been to
一道初四英语选择题Tom wanted to know__________ shanghai to see the World EXpo.A.if they have gone toB.if had they been toC.if they had gone toD.if have they been to
C
宾语从句的语序是陈述句语序,排除B与D,另外主句是一般过去时,从句应用相应的过去时,再排除A
A
A
宾语从句用陈述语气
c是正确的
选C 首先know 后面接的是宾语从句，所以应用陈述语序；再考虑语态，谓语为wanted 所以应用过去完成时
c
A
C
C
宾语从句用正常语序
他们去了上海没回来是过去的事，应该用过去完成时
c 人在美国 不解释.
A
C 从句用陈述语序，时态为过去完成时！
C.know后面接的是宾语从句，宾语从句用陈述语序；另外谓语wanted是过去式，而have gone to的思是在去的路上或回来的路上，或者到达目的地，很显然这个去的动作发生在谓语wanted之前，所以，宾语从句要用过去完成时，即选C