when: adv.1.〔疑问〕什么时候，几时。 W- did you see him (这以前)你几时见他的？2.〔关系，引导定语从句〕当…的时候。 He came at a time when I least expected him. 他在我最想不到的时候来了。3.从前境况差时。brag of having known sb. when 夸耀自己是某人过去的患难之交[布衣之交]。
look: vi.1.看，注视,盯 (at). Look! 你瞧!看哪! We looked but saw nothing. 我们看是在看，可是什么也没有看见。2.〔带有述语〕显得，好像。 look sick 显得有病的样子。 He does not look his age. 他看上去不像是有这个年纪的人。 He looks very tired. 他好像很疲倦。 He looks
