名词
1. We built an extension to our house.
我们扩建了我家的房屋。
2. We had hoped for the extension of the deadline to the end of the week.
我们曾希望把最后期限延至周末。
3. extension的反义词
3. We built an extension onto the school, so now we have two more classrooms.
我们把学校扩建了一些，因此现在我们又多了两间教室。
4. The toolshed was built as an extension of the house.
工具房被看作是这座房屋的附加部分。