1.The country life he was used to_____greatly since 1992.A change B has changed C changing D have changed2.The book was written in 1946,____the education system has witnessed great changes.A when B during which C since then D since when
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1.The country life he was used to_____greatly since 1992.A change B has changed C changing D have changed2.The book was written in 1946,____the education system has witnessed great changes.A when B during which C since then D since when
1.The country life he was used to_____greatly since 1992.
A change B has changed C changing D have changed
2.The book was written in 1946,____the education system has witnessed great changes.
A when B during which C since then D since when
1.The country life he was used to_____greatly since 1992.A change B has changed C changing D have changed2.The book was written in 1946,____the education system has witnessed great changes.A when B during which C since then D since when
1.B
since：自...以后,自...以来(常用于现在完成时或过去完成时)
the country life 属于单数 所以 用 has changed
2.D
若since引导的状语从句的谓语动词是持续性动词或表示状态的动词的过去时时,则从句表示的时间是“从那持续动作或状态结束时算起”.
前面用的是时间1946,所以用when 链接
两题都是since 的问题
附上since 的用法
1.D
was used to 的宾语是country life,整个he was used to 是从句，可以去掉。
2.D
when指代前面的话，构成从句。
b
d
DD
B
D