题目内容：

"奥运会每四年举行一次"英语怎么说?
1.奥运会每四年举行一次
2.通常在春天种树
3.我认为需要建两座桥.
----翻译

优质解答

1.Olympic games is held every four years .
2.Usually, trees are planted in spring .
3.I think two bridges need to be built.
I think two bridges need be built.（这句是把need看做是情态动词,但是好象还是没有上一句好）