I get so confused with how to construct these, and I am sure it is quite simple. For instance, "a person/someone who understands English"...would this be "eigo wo wakaru hito"? What about negative "a person/someone who doesn't understand English"?
Recently I tried to tell my students, "if you understand, raise your hand" and since I don't really get the conditional yet (another lesson to deal with) I said "wakaru seito ga te wo agette kudasai" which got responses, so I tried to follow up with negative "wakarimasen seito ga te wo agette kudasai" and got giggles and blank looks. Since this usually means I have messed up my Japanese, I am guessing this is wrong. Can someone explain, in small words for my poor slow head, how relative clauses work in Japanese?
Thanks!
Sean