can的比较级最高级
没有比较级和最高级
第三人称单数: cans
复数: cans
现在分词: canning
过去式: could
过去分词: could 扩展资料
When can I get my test results?
我什么时候可以拿到化验结果
We can reduce the problem to two main issues.
我们可以将这个问题概括成两个要点。
The operation could prolong his life by two or three years.
这次手术可使他多活两三年