Questions & Answers about Они покупают блюда и лампы.
How do we form the plural for the word лампа?
Лампа is a feminine noun ending in -а. To make regular feminine nouns plural, you drop the -а and add -ы. That gives us лампы (lamps).
Why does блюдо change to блюда in the plural? Shouldn't it end in -ы too?
No, because блюдо (dish) is a neuter noun, since it ends in -о. For regular neuter nouns, the plural is formed by changing the -о to -а. So, блюдо becomes блюда.
Are the nouns in the nominative case here, even though they are being bought?
They are actually in the accusative case because they are the direct objects (the things being bought). However, for inanimate nouns (objects that aren't alive), the accusative plural form is exactly the same as the nominative plural form. So you can just use the regular plural rules you are learning right now!
Why does the verb покупают end in -ют?
Because the subject is Они (They). The dictionary form of the verb is покупать (to buy). To make it match "they" in the present tense, we drop the -ть and add -ют, giving us покупают.
Does блюда mean physical plates, or prepared food?