1. 이랬다 저랬다 변덕스러운 : moody

Sally is moody, she said hello nicely yesterday and today she ignored me.

2. 재미없고 지루한 : serious

Eric is a serious person. He never joins in when we play games.

3. 재주가 많은 : talented 

Jenny is very talented, she can sing and dance with any kind of music and even paint well. 

4. 자기만 아는 : big-headed

Simon is a bit big-headed, he thinks more of himself than other people do. 

5. 성질이 고약한 : bad-tempered 

Ethen is bad-tempered, he always shouts at his son.