G03. Informal Polite ending-아요/어요/여요(해요)

1. Verb stem+ -아요/어요/여요(해요): 

In Korean sentence, its type is various to whom and where you are talking. 
1) This ending '-아요/어요/여요(해요)' can be used in informal situations but still polite.
2) This ending '-아요/어요/여요(해요)' can use for asking questions, making statements and suggesting to some action together. It can be differentiated by intonation.

2. Combining 'Verb stem + -아요/어요/여요(해요)"

1) if the last syllable of verb stem has the vowels 'ㅏ'or 'ㅗ', then combine with '-아요'
2) if the last syllable of verb stem has the vowels other than 'ㅏ'or 'ㅗ', then combine with '-어요'
3) if the verb ends with '하다', then 하다+여요 together '해요'

3. Practice: Please change the following verbs to informal polite ending.

• 많다 be many/there are many → 
• 적다 be less → 
• 나가다 go out → 
• 들어가다  go in → 
• 들어오다 come in → 
• 받다 receive → 
• 가르치다 teach → 
• 알다 know → 
• 읽다 read → 
• 보다 see/watch →