作业帮\\\\\\\\\\\\
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/11 20:21:52
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解题思路： 如下
解题过程：
句型转换
1. They have already visited the space station. (改为否定句)
They haven’t visited the space station yet.
2. He has been to Shanghai twice. （改为一般疑问句）
Has he been to Shanghai twice?
3. I have just finished my homework. （改为否定句）
I haven’t finished my homework yet.
4. They haven’t found anything yet. （改为肯定句）
They have already found something.
最终答案：略
解题过程：
句型转换
1. They have already visited the space station. (改为否定句)
They haven’t visited the space station yet.
2. He has been to Shanghai twice. （改为一般疑问句）
Has he been to Shanghai twice?
3. I have just finished my homework. （改为否定句）
I haven’t finished my homework yet.
4. They haven’t found anything yet. （改为肯定句）
They have already found something.
最终答案：略