(1) obligate指“强制某人做某事”，尤指依照法律或道义，常用被动语态。
- He felt obligated to help.
他觉得有责任去帮忙。 - I'm obligated to fulfill these conditions.
我有责任履行这些条件。 - Everybody is obligated to take good care of public property.
每个人都有责任爱护公物。 - All units, organizations and individuals are obligated to help the underdeveloped regions.
一切单位、组织和个人都有责任帮助欠发达地区。
(2) ①oblige 以诺言、誓约，或法律、契约等来束缚某人，要求某人做某事，意为“迫使；要求”。
- The law obliges parents to send their children to school.
法律要求父母送子女入学。
②oblige在表示某种必要性迫使某人“不得不；只好做某事”时，通常用被动语态。
- They were obliged to sell their store in order to pay their debts.
他们被迫卖了商店来还债。 - They were obliged by circumstances to do it.
环境使他们不得不这样做。
③在表示施惠于某人时，常用主动语态。
- Would you please oblige me by closing the door?
请替我关上门好吗? - Can you oblige us with a song?
你能给我们唱个歌吗?
④在表示“使感激，使感谢”时，通常用被动式。
- We're really very much obliged to you for your kindness in coming round to see us.
对于你前来看望我们，我们真的非常感谢。 - We shall be deeply obliged if you will be so kind as to make suggestions for improvement of our work.
如果你能给我们建议以改进我们的工作，我们将不胜感激。
⑤表示“使……高兴”时用主动式。
- Have a little more just to oblige us.
单是为了我们高兴，你也要多吃一点。
⑥oblige...by (+-ing)表示“(做某事)使高兴；劳驾(做某事)”。
- You would oblige me by giving more time to your work (...if you gave more time to your work).
如果你把更多的时间用于工作，我将很高兴。
⑦而要表达对某人感激时，to be indebted to由“欠某人的债”引申为“受某人恩惠”，比to be obliged to更积极一些。
- I'm greatly indebted to all the people who worked so hard to make the party a success.
我十分感激那些努力使晚会成功举办的人。 - We're indebted to science for many of our comforts.
我们许多舒适的设施都得归功于科学。
(3) compel表示“强迫，迫使”，使某人不得不屈从或同意做自己不愿意做的事。
- The march of events compelled us to change our minds.
事件的进展迫使我们改变主意。 - She was compelled by illness to leave the work she had loved so much.
由于生病，她被迫离开她曾经那么热爱的工作。
(4) force在表示“强迫，迫使”时系普通用词，含有用强力或压力促使某人做某事之意。
- They forced the invaders onto the defensive.
他们迫使侵略者采取守势。 - We shouldn't force our views on others.
我们不应当把自己的观点强加于人。 - She forced down her upper lip as if afraid that to smile was not polite.
她好像怕笑出来失礼似的，使劲把上唇抿住。
(5) make 可表示“迫使，强使”(force, compel), 也有“说服”(persuade)某人做某事的意味，语气较force 要弱。
- You may take a horse to the water, but you can't make him drink.
你可以把马牵到水边，但你不能强迫它喝水。 - Tom made him stay to tea.
汤姆说服他留下来喝茶。
