We have no hospital, let alone an isolation ward. He hasn't enough money for food, let alone amusements. 21 base 1)vt [usu. pass place or establish; provide with a base or center Their relationship was based on/upon mutual respect. 这个电影是以马克温的小说为题材的。 The film is based on a novel by Mark Twain 2) O the lowest part of something, esp the part on which something stands There is a hole in the base of the tree there is a door at the base of the tower a place where people in a military organization live and work a military base 军事基地) a naval base (=海军基地) an air base (=空军基地 CF: base, basis foundation 这几个名词都有“基础,根基”的意思。 base指构成或支撑某一具体物体的基础,也可指军事基地或用作比喻意义。例 如 The lamp stands on a circular base. (=落地灯由圆形底座支撑。) Some of the military bases on this island were built in the 19th century (=这个岛上的一些军事基地建于19世纪。) bass主要用作抽象或引申意义。例如 Charity toward others is the basis of her philosophy (=慈善待人是她人生观的基点。) foundation用于具体意义时,指坚固结实的建筑物的基础或地基;用作比喻意 义时,与 basis基本相同。例如: The earthquake shook the foundations of the house (=地震连屋基都震动了。) Those thoughts rocked her belief to its foundations (=那些想法从根本上动摇了她的信念。) 22 continually: adv, without stopping; repeatedly We are continually reassessing the situation NB:注意该词的词性变化,它的形容词形式与名词形式分别为: continua|和 continuation CF: continual, continuous, successive constant 这些形容词均有“连续的”“不断的”之意 continua|强调重复或持续发生,但连续之间允许有间断。* We have no hospital, let alone an isolation ward. * He hasn’t enough money for food, let alone amusements. 21. base 1) vt. [usu. pass.] place or establish; provide with a base or center * Their relationship was based on/upon mutual respect. 这个电影是以马克•吐温的小说为题材的。 (= The film is based on a novel by Mark Twain.) 2) n. ① the lowest part of something, esp. the part on which something stands * There is a hole in the base of the tree. * There is a door at the base of the tower. ② a place where people in a military organization live and work * a military base (= 军事基地) * a naval base (= 海军基地) * an air base (= 空军基地) CF: base, basis & foundation 这几个名词都有“基础，根基”的意思。 base 指构成或支撑某一具体物体的基础，也可指军事基地或用作比喻意义。例 如： * The lamp stands on a circular base. (= 落地灯由圆形底座支撑。) * Some of the military bases on this island were built in the 19th century. (= 这个岛上的一些军事基地建于 19 世纪。) basis 主要用作抽象或引申意义。例如： * Charity toward others is the basis of her philosophy. (= 慈善待人是她人生观的基点。) foundation 用于具体意义时，指坚固结实的建筑物的基础或地基；用作比喻意 义时，与 basis 基本相同。例如： * The earthquake shook the foundations of the house. (= 地震连屋基都震动了。) * Those thoughts rocked her belief to its foundations. (= 那些想法从根本上动摇了她的信念。) 22. continually: adv. without stopping; repeatedly * We are continually reassessing the situation. NB: 注意该词的词性变化，它的形容词形式与名词形式分别为：continual 和 continuation。 CF: continual, continuous, successive & constant 这些形容词均有“连续的”、“不断的”之意。 continual 强调重复或持续发生，但连续之间允许有间断