★ i'll get some at once.
i'll get some at once.我马上去弄茶。
at once 表示“马上”，“立即”，相当于right away .例如：
after we finished our homework,we went out to play at once.
做完作业后，我们很快就出去玩了。
let's do it at once.
让我们马上干吧。
you can take my book right away.
你可以马上拿走我的书。
★ people often ask me whether i like being a twin.
people often ask me whether i like being a twin.人们经常问我是否喜欢当一个双胞胎。
whether 表示“是否”，它的同义词是if ,它们都可以引导出一个从句。但whether后面可以加or not.例如：
i don't know if she is miss gao.
我不知道她是否是高小姐。
i'll go shopping whether it is fine or not tomorrow.
明天天气好不好，我都要去买东西。
★ but we never fight for long.
but we never fight for long.但是我们打架从来不会太长的。
fight 可以表示小指打架大指战斗。例如：
two men are fighting in the front of the shop.
两个人在商店前打架呢。
we'll fight for our country.
我们要为我们的国家而战。
★ we always make friends with each other again.
we always make friends with each other again.我们总是又互相成了朋友。
make friends with 表示“同…交朋友”，注意friends 是复数形式。例如：
he'd like to make friends with the young people.
他喜欢同年青人交朋友。
he hates making friends with that kind of person.
他恨同那种人交朋友。
★ usually we get on very well with each other.
usually we get on very well with each other.通常我们相处的很好。
get on with…表示“与…相处”或“在某方面的进展…”。例如：
how are you getting on with your sister?
你同你的妹妹相处的怎么样？
how are you getting on with your study?
你的学习怎么样？
★ but people still mistake us for each other.
but people still mistake us for each other.但是人民还是把我们认错。
make sb.for …表示“把某人当作…”。例如：
i often mistake him for xiao li.they look the same.
我经常把他错认为小李。他们看起来一样。
i'm sorry i mistook you for lucy.
对不起，我把你错认成露西了。