be lost ……不见了
be lost in sight 看不见
be lost in thought 陷入沉思
be made from 由……(加工)制成
be made into 制成、加工成
be made of 由……(直接)制成
be made up of ……由……组成
be marked with 被标上
be measured in 以……来衡量
be missing ……不见了
be mixed with sth. 用……混合
be not in agreement ……是不同的
be nothing more than 只不过是
be of different sizes/colours/weights/ages/ shapes 尺寸/颜色/重量/年龄/形状不同
be of great/no help/value/importance/use to sb. 对某人(没)有很大(帮助等)
be of the same kind 同一类
be of the same size/colour/weight/age/shape尺寸/颜色/重量/年龄/形状相同
be of this kind 属于这一类
