Who can help me?

Oh,no…

situation is more like a combination of multiple circumstances

这么说吧，处境、情况、情形这三个词怎么区分？

自己去找个英英词典查查就明白了。

意思没什么不同吧，前面的介词不同

situation表示一种情形，大多多规模比较大的，商业，金融危机，战争等，而 circumstance 根据词根学来判断 circ 表示的圈的意思 后面则是表示它的后缀，也就是周围的意思，相对而言它它比situation 规模要小

初一的吧，没关系，以后就知道了，这不影响高考，单词背着背着，就都知道了，学习没有捷径，其实一步一步来就会发现其实初中没多少东西，暑假两个月拼命学就够了，高中也是一样，但大概也要六个月，(中上成绩是这样），要考好大学，熟练度相当重要，复杂的事简单做，简单的事情重复做。

这个没有验证码╮(╯▽╰)╭

有问题就问。知根知底是好学生。因为只有理解才能帮助长期记忆。来挑战一下吧。
Condition 单数
Condition describes the physical state of something or some one. We talk about people or things being in good / bad / terrible / etc condition. Condition can also refer to a health problem:
Considering its age, this house is in excellent condition.
He was in a terrible condition and had drunk far too much whiskey.
She has a severe heart condition and shouldn't be smoking at all.

Conditions (plural) 复数
refer to the environment in which something occurs. We talk about things happening in or under appalling / terrible conditions. We also talk about people's living or working conditions: 生活，工作的环境条件
The rescue was attempted under extremely difficult conditions and with little chance of success.
The refugees were living under appalling conditions with no access to clean water. 难民，非常恶劣的环境条件， 难取水
Are you happy with your working conditions? ~ Yes, they are excellent. I have no complaints.工作环境
The extremely windy conditions made it difficult for either side to play decent football.大风情况下，难踢球

Conditions also describe things that must be true or be done before something else can happen. We talk about meeting or satisfying or imposing conditions. 也可以条款，条件（交换条件）
In order to qualify for a grant as a postgraduate student, you will need to satisfy certain conditions.
The conditions imposed by the university meant that no one was likely to qualify.

Situation
Situation refers to a set of conditions that are in place at a particular time and in a particular place: （各种情况）在特别时间，特别地点。
If the situation had been different, our marriage might have succeeded. 如果当时。。我们的婚姻就。。
I am particularly concerned about the situation in the south of the country where the rules of law and order appear to have broken down. 我关心东边的 情况（可以涉及各种conditions）

'Circumstances' (plural) is the way in which something took place: what were the circumstances of his death?
当时(他死时）放生了什么事 =他的处境是？（事件情况）
Under no circumstances means 'not at all'.
In the circumstances means 'as things have turned out like this' or 'as it happens': （在那种“处境”下，还是发生了）
it's a pity it's pouring down, but in the circumstances it doesn't matter so much as there is plenty to do indoors.
也可以是第二个意思
'Circumstances' is also the state of your finances: he is in easy circumstances; they are in tight circumstances. 经济境况