The structure "a plural noun + a plural be verb + a singular noun?" Hello. I watch The Big Bang Theory series with English and Korean subtitles for my English learning. And I found some grammatically interesting sentences in a few episodes of the show. Here I will show them all: The Big Bang Theory Season 2 Episode 03 Penny: When I was walking up those stairs, a fly flew in my mouth and I ate it! Sheldon: Actually, insects are a dietary staple in many cultures. --------------------------------- The Big Bang Theory Season 2 Episode 19 Sheldon: Are you fertile? A woman: What? Sheldon: I'm trying to determine whether crying infants above my head are a possibility. --------------------------------- The Big Bang Theory Season 3 Episode 06 Sheldon: That appears to be a football cocktail dress. Leonard: It's the smallest size they had, except for the one for dogs. I can't believe they had one for dogs. Sheldon: Oh, yes. Canine football fans are a common sight in Texas. _______________________________________________ I'm sure there's something I don't know about the grammar rule for this. Since the above subjects are plural and the verbs "to be" are plural, shouldn't the complements (objects) be also plural? I still can't understand why all the above complements are singular. I've always been wondering about it, and now I have just posted it up. Help me with this, please. Thanks!