1．(教材P38)First of all，Daniel should stay away from food containing a lot of sugar.
首先，丹尼尔应该远离那些含大量糖的食物。
(1)first of all 第一；首先；最重要(的是)
First of all，let me introduce myself to you.
首先，让我向你做自我介绍。
[明辨异同] first of all/first/at first/firstly
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first of all
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意为“第一；首先”，相当于first，常用于句首。
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first
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用作副词时，意为“第一；首先”，一般用于说明顺序。
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at first
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与at the beginning同义，意为“起初；起先”，主要是对应“后来(later)”而言的，常用于转折并列句的第一个分句前。
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firstly
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它只用于列举事实论点常与secondly/thirdly连用。
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Work must come first.工作必须放在第一位。
At first，he didn't realize the importance of study.
起初，他没有意识到学习的重要性。
用first/at first/firstly/first of all填空
① I found English difficult.
②You must finish your work .
③It was very hot ，but then it got cooler.
④When I met you，I thought you were a fine man.
⑤Let's see who gets there .
⑥“Are you interested in Chinese？”“Yes，but I wasn't .”
⑦ brush your teeth，secondly (second) wash your face.
⑧ ，you must answer my question.
【答案】 ①At first ②first ③at first ④first ⑤first ⑥at first ⑦Firstly/First ⑧First of all
