1.Only after a year ( ) to see the result of my experiment.A.I began B.I had begun C.have...1.Only after a year ( ) to see the result of my experiment.A.I began B.I had begun C.have I begun D.did I begin2.( ) in the fields for two hours,they took a rest.A.Having worked B.Working C.Worked D.Being worked为什么第一题c为什么不对
问题描述：
1.Only after a year ( ) to see the result of my experiment.A.I began B.I had begun C.have...
1.Only after a year ( ) to see the result of my experiment.
A.I began
B.I had begun
C.have I begun
D.did I begin
2.( ) in the fields for two hours,they took a rest.
A.Having worked
B.Working
C.Worked
D.Being worked
为什么
第一题c为什么不对
答
1. D after a year 用一般过去式
2. A
答
C 副词在句首，要倒装AB不对 D时态错误
A for two hours是完成时的信号词
答
1.D only引导的倒装句,
2. A took是过去时,要发生在之前的动作,完成时
答
D, B
第一句是倒装句，正常是：I began to see the result of my experiment only after a year.
意思是：一年之后我才开始看到试验的成果。
第二句的意思是：在地里走了两个小时，他们休息了一会。