谁有less than 的所有用法？

比较： less than 后面接形容词、副词时，意为“不；很少；不到”，具有否定意义。例如： a) We were busy and less than delighted to have company that day. 那天我们很忙，不高兴有客人来。 b) The young man is less than twenty years old. 这个年轻人不到 20 岁。