Ⅰ.单句语法填空(高考真题改编)
1. (2019年天津卷)The workers were not better organized, otherwise they ________ (accomplish) the task in half the time.
解析：句意：工人们没有被更好地组织，否则他们会用一半的时间完成任务。此处表示与过去事实相反的假设，would have done sth.意为“本来能够做某事”。
答案：would have accomplished
2. (2018年天津卷)If we ________ (catch) the flight yesterday, we would be enjoying our holiday on the beach now.
解析：句意：如果昨天我们赶上那趟航班，我们现在正在沙滩上享受我们的假期。if从句表示与过去事实相反的假设，其谓语动词需用“had＋过去分词”形式。
答案：had caught
