Learn French: Ce sont des choses amusantes.

In English, we can just say "things" by itself, but in French, nouns almost always need an article (a small word like le, la, un, or une) in front of them. Des is the plural of un or une. It translates to "some", but it is required in French even when we completely leave it out in English!

How do the words change to become plural in choses amusantes?

Both the noun (chose) and the adjective describing it (amusante) get an -s added to the end to make them plural. Remember that in French, adjectives must match the plural form of the noun they describe. Also, notice that these -s endings are completely silent when you speak!

Why does this sentence start with ce sont instead of elles sont?

Ce sont is the plural form of c'est (it is / this is). We use c'est and ce sont when we are identifying what something is using a noun, especially with an article like un or des. If you were just describing them with an adjective, like "They are funny", you would use elles sont amusantes. But because you are saying "They are funny THINGS" (using a noun), you must use ce sont.

Why is it choses amusantes and not ?