e did have a good time last night.Р他昨天晚上的确玩得很开心。Р【归纳拓展】注意:do的这种用法只用于肯定句,且只有现在时和过去时两种时态。如:РI do hope you have a merry Christmas!Р衷心祝你圣诞快乐!РHe did read the letter just now.Р他刚才的确读过那封信。Р3. It looked splendid when first built.Р刚建起来的时候很辉煌Р【句型剖析】 1)本句是一个复合句,when引导时间状语从句Р2)When first built是When it was first built的省略形式。Р【归纳拓展】状语从句中,若从句的主语和主句的主语一致,同时谓语含有系动词be或从句为:it is 结构时,往往省去该从句的主语和be动词。如:РBe careful when(you are)crossing the street.Р过街时要当心。РTurn to him for help if (it is)necessary.Р如果有必要可求助于他Р【高考链接】When first______ to the market, these products enjoyed great ess. (04全国II)Р A introducing B introduced C introduce D being introducedР(答案B)РIt shames me to say it, but I told a lie when___ at the meeting by my boss. (04全国IV) A questioning B have questioned C questioned D to be questioned