at Christmas/ on Christmas
Ⅰ. at Christmas 表示在圣诞节期间,既可以表示在圣诞节当天,也可以表示在圣诞节前后不久。如:
Ill return at Christmas 我将在圣诞节期间回来。
Ⅱ. on Christmas 则指在圣诞节,一般仅指在十二月二十五日当天。如:
Children always get many presents on Christmas Day.
在圣诞节孩子们总是收到许多圣诞节礼物。
[注]:on Christmas Eve 指的是在圣诞节前夜相当于中国的除夕。
at first/ first
Ⅰ. at first 起初,多用来表示后来发生的事情或动作,与前面的不同,甚至相反。如:
At first she knew nobody but now she has many good friends.
起初她谁也不认识,但现在她有很多朋友。
Ⅱ. first 用来表示一系列动作或事物的开始。如:
Be polite. First knock at the door and then go in. 要有礼貌。先敲门,再进去。
at last/ finally/ in the end
Ⅰ. at last 最后表经过一定曲折之后某事才发生,强调努力的结果,带有较强的感情色彩。须用一般过去时。如:
Did the man in the shop understand him at last?
Ⅱ. finally 表动作的发生顺序是在最后, 无感情色彩,只用于过去时。它居句首时较多。
① Finally he went to see the famous man himself.
Ⅲ. in the end 表事物发展的自然顺序的终结,有时可与finally相互替换。但用于将来的预测时,则只能用in the end 如:
① I hope that everything will turn out all right in the end.
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