"There is" and "There are" ? Hope it would not impolite. According to a teacher's profile, "My lesson are fun, informative and useful for everyday situation." My questions: 1) Why the verb is "are"? 2) "Lesson" is a countable noun, so should we change it to plural "lessons"? or dose it has a special meaning in the sentence? I also have other questions about the verb as following. 1) There (is or are?) a dog, two cats, and three pigs. 2) There (is or are?) three pigs, two cats, and a dog. 3) There (is or are?) a dog and a cat. I want to know more about "There is…." and "There are…." Hope someone can kindly tell me the answers and why. Thanks.