Question

he didn't study hard before

关于定语从句和宾语从句的问题
定语从句：
一.用恰当的关联词填空
1.He laughs best____laughs last.
2.All____you have to do is to study hard.
状语从句：
二.单选
3.He didn't tell me anything____he left.
A.until B.before C.after D.since
4.The red suitcase is expensive____it's made of leather.
A.when B.if C.because D.though
5.____you turn on Home With Kids《家有儿女》,you'll never be able to turn the TV off.
三.用恰当的连词填空
6.____the lights are green,the traffic can go.
7.Don't say that____you think it over.
8.Please give me a ring____you talk to your father.
9.____he finshed his work,he left his office.
四.按要求转换句子
10.Lucy often helps her mother do the homework.(改为同义句）
Lucy often helps her mother____（填一词）the homework.
请注明答案和原因理由,

Answer 1

定语从句：
一.用恰当的关联词填空
1.He laughs best_until laughs last.
2.All_that_you have to do is to study hard.
状语从句：
二.单选
3.He didn't tell me anything_until_he left.
A.until B.before C.after D.since
4.The red suitcase is expensive because_it's made of leather.
A.when B.if C.because D.though
5.When you turn on Home With Kids《家有儿女》,you'll never be able to turn the TV off.
三.用恰当的连词填空
6.When the lights are green,the traffic can go.
7.Don't say that before_you think it over.
8.Please give me a ring_after/before_you talk to your father.
9.After_he finshed his work,he left his office.
四.按要求转换句子
10.Lucy often helps her mother do the homework.(改为同义句）
Lucy often helps her mother_with（填一词）the homework.
我是英语教师,答案百分百对,不明可再问.