Question

13．由于天气恶劣，飞机起飞晚了两个半个小时．
The planetook off two and a half hours late because of bad weather．

Answer 1

分析 took off two and a half hours late because of．

解答 答案：took off two and a half hours late because of．这里是说过去的事用一般过去时，起飞take off，take的过去式took，晚了两个半个小时two and a half hours late，由于，结合后面的bad weather为名词短语用because of，故答案是took off two and a half hours late because of．

点评 because是连词，其后接原因状语从句或回答以why开头的问句； 
而because of是复合介词，其后接名词、代词或动名词，或者what引导的名词性从句．
如 Because he is ill，he is absent today．
He is not at school because of his illness．