and连接的动名词短语作主语谓语动词用单数还是复数(主谓一致问题)
Although observing and recording their daily activities ____ very tiring and dirty sometime.
横线处应该填is还是are呢?
两个动名词并列和两个动名词共有一个宾语,是不一样的。前者谓语动词用复数,后者谓语动词用单数。试比较:
Reading and writing are two basic skills in English learning.
阅读和写作是英语学习的两项基本技能。
Observing and recording their daily activitiesis very tiring and dirty.
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