動詞 oblige:

1. force or compel somebody to do something
   同義詞：compel, oblige, obligate
2. bind by an obligation; cause to be indebted
   同義詞：oblige, bind, hold, obligate
3. provide a service or favor for someone
   同義詞：oblige, accommodate

形容詞 obliging:

1. showing a cheerful willingness to do favors for others
   同義詞：complaisant

1. You are not obliged to answer these questions, but it would make our task easier.
   這些問題并非非答不可，但答問對我們大有助益。
2. Exhibiting a desire or willingness to please; cheerfully obliging.
   殷勤的表現(xiàn)出取悅別人意愿的; 樂于順從的

o.blig.ing

adj.（形容詞）
Ready to do favors for others; accommodating.See Synonyms at amiable
樂于施惠于人的；熱心助人的參見 amiable

【引伸】
oblig.ingly
adv.（副詞）
oblig.ingness
n.（名詞）