1. affect vs effect
两个“影响”辨析
Affect and effect are two words that are commonly confused. Affect is usually a verb (action); effect is usually a noun (thing).
Affect和effect这两个词语经常被混淆。Affect通常用作动词，表示某种行为，而effect常用作名词，表示某事。
Hint: If it’s something you’re going to do, use “affect.” If it’s something you’ve already done, use “effect.”
提示：如果某事是你正打算要去做的，那么用affect；如果某事是你已经做完了的，那么就用effect。
To affect something or someone.
“影响”某事或某人
Example 1: The noise outside affected my performance.
例1：外面的噪音影响了我的发挥。
Example 2: Staying away so long from office will affect promotion.
例2：长期离职会影响晋级。
The use of “effect” as a verb is what causes the most confusion between these two words.
effect用作动词时，最容易和affect造成混淆。
To have an effect on something or someone.
对某事或某人有“影响”
Note: effect is followed by the preposition on and preceded by an article (an, the)
注意：effect前面一般要有冠词a/the，effect后面通常要加介词on。
Example 1: His smile had a strange effect on me.
例1：他的笑容对我有一种奇怪的影响。
Example 2: Parents worry about the effect of music on their adolescent’s behavior.
例2：家长们担心音乐对于其青少年子女行为的影响。
2. some time / sometime vs sometimes
一段时间、某时和有时的辨析
Some time means a period of time.
Some time表示一段时间。
Example 1: The government still has sufficient instruments and still some time to move on this question.
例1：政府仍然有足够的工具和时间来应对这个问题。
Example 2: I think Jenny and I need some time right now anyway.
例2：反正我和珍妮需要一点时间。
Sometime indicates a time in the future or the past which is not known or not stated.
Sometime表示未来或者过去的某个时间，而这个时间目前还未知或者没有表述清楚。
Example 1: They hoped to meet up sometime.
例1：他们希望能找个时间见个面。
Example 2: The sales figures won’t be released until sometime next month.
例2：销售数据要到下个月的某个时候才会公布。
Sometimes means on some occasions but not always or often.
Sometimes指的是有时，但并不经常，表示频率。
Example 1: During the summer, my skin sometimes gets greasy.
例1：夏天我的皮肤有时会变得爱出油。
Example 2: I differed with my partner sometimes,but we usually agree.
例2：我有时与我的伙伴争论，但我们通常是一致的。
3.e.g vs i.e
例如”和“也就是”的辨析
e.g. stands for exempli gratia = for example.
e.g.是拉丁语exempli gratia的简写，表示“例如”，用于举例说明。
Example: “I like fast cars, e.g. Ferrari and Porche”.
例句：我喜欢跑车，比如法拉利和保时捷。
In the sentence above you are simply giving an example of the kinds of cars you like – Ferraris and Porches.
在上述例句中，e.g.后要加你喜欢的车子的类型，即法拉利和保时捷。
i.e. stands for id est = that is (in explanation).
i.e.是拉丁语id est的简写，表示“也就是、即”的意思，用于解释说明。
Example: “I like fast cars, i.e. any car that can go over 150mph.”
例句：我喜欢跑车，也就是时速超过150英里的车子。
In this second sentence you are giving an explanation of what you consider to be fast.
在第二句例句中，i.e.后是对跑车的说明，即你认为的跑车是多快的车子。
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