B.If so C.If ever
D.If not 解析:选C。句意:——你去过长城吗?——在我记忆中好像没有去过。要是去过的话,或许是在童年.if ever如果曾经,该句完整形式为:If I have ever been to the Great Wall...;if any如果有一些(表示数量);if so如果那样;if not如果不。 考点四 省略 经典品味 2.(2016·杭州第二次质量检测)Be careful when you deal with this chemical,as it will explode when________to sunlight. A.being exposed
B.to expose C.exposing
D.exposed 解析:选D。考查非谓语动词。句意:当你处理这种化学物品时要小心,因为当它暴露在阳光下时会爆炸。后半句是“as it will explode when it is exposed to sunlight”的省略形式, it与expose之间是动宾关系,故用过去分词形式。 3.(2016·泰安模拟)—Why didn’t you buy the gold ring? —I________,but I didn’t have the money. A.would have
B.bought C.would like to
D.had bought 解析:选A。省略的句子补充完整为:I would have bought it if I had had the money,是对过去事实的假设,用虚拟语气;I didn’t have the money是事实,用陈述语气。 1.在when,while,whenever,till,as soon as,if,unless, as if,though,as等引导的状语从句中,若谓语有be动词,而主语又与主句主语相同或主语是it时,从句的主语和be常被省略。 Though surprised to see us,the professor gave us a warm welcome. 教授看到我们,虽然很惊讶,但还是热情地欢迎了我们。 When people cut down big trees,new trees should be planted.If not they will have no trees to cut down in the future. 当人们砍倒大树时,应该种植新树,不然的话,他们以后就没有树木可砍了。 要点浓缩 2.不定式省略,单独使用不定式符号to。 (1)用来代替动词不定式后被省略的动词,常在be afraid,be glad,forget,hope,intend,like,love,mean,prefer,refuse,seem,try,want,wish等的后边。 —What’s the matter with Della? —Well,her parents wouldn’t allow her to go to the party,but she still hopes to. ——Della出什么事了? ——父母不允许Della参加晚会,可她仍然希望参加。 —Will you join in the game? —I’d be glad to. ——你愿意加入做游戏吗? ——我很高兴。 (2)如果不定式中含有be,have,have been,通常保留be,have和have been。 —Are you a sailor? —No,but I used to be. ——你是海员吗? ——不,但我过去是。
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