A be content to do sth.

Asking if you are under an obligation to do something.

询问你是否不义务做某事.

State somebody is under an obligation not to do something.

表示某人有义务不做某事.

Document show that someone have official permission to do something.

表明某人有做某事正式允许的文件.

State some body is under an obligation to do something.

表示某人没义务做某事.

State you are under an obligation not to do something.

表示你有义务不做某事.

Do sth out of pure kindness, malice mischief, etc.

完全出于好意 、 恶意 、 戏弄人的动机等而做某事.

If you promise to do something, you must not break your promise.

如果你答应做某事, 就一定不要失言.

You use manner clauses to about how something is done.

方式状语从句用以表示做某事的方式.

He was seized with a sudden idea to do sth.

他突然勃发做某事的念头.

Ps: consider not very seriously.

不大认真地考虑某事物.

Put a construction on sth.

对某事物作某种解释(一般指对言语、行为等)

His face was a ghastly white.

将(某人[某事物])置于隔离的有限范围内.

What was sth. like?

某人[某事物]是个什么样?

Lessen the possibility of sth.

减少某事物发生的可能性.

They were blooming with health and happiness.

健康地成长;长成或发展成(某事物);兴盛.

Which reject and which to accept?

认为某事物是错误的;拒绝接受.

Arrange or fix sth; decide on ( sth ).

安排、确定或决定 ( 某事物 ).

There's more than one way to skin a cat.

不要因为不能马上成为某事物的专家而失望.

Something remains to be a subject of controversy to sb.

对某人来说,某事物仍然备受争议.

He wanted proof before he would believe something.

在他相信某事物之前要先取得证据.