Unit11. 随着职务的提升，他担负的责任也更大了。(take on)With his promotion, he has taken on greater responsibilities.2. 他感到没有必要再一次对约翰承担这样的责任了。(make a commitment)He felt he did not have to make such a commitment to John any more.3. 闲暇时玛丽喜欢外出购物，与她相反，露茜却喜欢待在家里看书。(as opposed to)Mary likes to go shopping in her spare time, as opposed to Lucy, who prefers to stay at home reading.4. 说得好听一些，可以说他有抱负，用最糟糕的话来说，他是一个没有良心 (conscience) 且没有资格的权力追求者。(at best, at worst)At best he s ambitious, and at worst a power-se
