1,the saying hanging on the classroom wall is ecouraging and inspiring.
2,Our soldiers fought against the block-house voilently,only after a while,the enemy gave up
我用例句说吧
You can come back,can you?= .你能么?确实对能不能回来表示疑问
You can come back,can't you?= .不是么?知道能回来的情况下的反问 语气更强烈
will you/ won't you 的解释类似如上
could you 表示礼貌请求