Hello! Both sentences are correct and we use it. We can drop some part of the sentence if we know some facts from the context. "He's a little sad that you're angry" we can translate as: 1. "Trochę mu smutno, że jesteś zły" (a numeral + a pronoun + an adverb) We dropped the verb "jest" because "mu smutno" defines this. (Trochę JEST mu smutno, że jesteś zły) 2. "Jest trochę smutny, że jesteś zły" (a verb + a numeral + an adjective) In this sentence we should add a subject "on" at the beginning. (ON jest trochę smutny, że jesteś zły) Like I said, both meaning the same, but is the difference in the structure. "On jest" and we have to add an adjective "smutny". "Jest mu" and we have to add an adverb "smutno". Hope this helps :)

Hello! The Memrise version is correct and sounds more natural "trochę (jest) mu smutno, że jesteś zły", the verb "jest" is implied. The version "jest trochę smutny, że jesteś zły" is also correct but it sounds unnatural