is 的复数形式是 are。 is [英] [ɪz][美] [ɪz] vt.& vi.是（be的三单形式）; n.存在; [例句]

Spain is our favorite holiday spot. 西班牙是我们喜欢的度假地点。

The boy is 150 centimeters tall. 这个男孩有150厘米高。

There is no doubt about it. 那是毫无疑问的。

A friend in need is a friend indeed. 患难之交才是真朋友。

Pain past is pleasure. 过去的痛苦即是快乐。

The room is 15 feet in length and 10 feet in breadth. 这房间长15英尺，宽10英尺。 [原型]be。