［正］ You can speak freely in front of your friends.
［析］ free作为形容词意为"自由的，有空闲的，免费的"。作为副词讲则是"免费"之意。而freely作为副词则是"自由的，随便的"。这些要注意的词还 有： hard 努力，艰苦 hardly 几乎不 late 迟，晚 lately 最近的，的 near 近 nearly 几乎 like 像 likely 几乎
［误］ They must have arrived till now.
［正］ They must have arrived by now.
［析］ by now是用于表达到目前为止某一动作已经发生，所以应用瞬间动词。而till now是强调某一动作一直持续到现在，所以一定要用持续性动词。 must have+过去分词是对过去某一事情所作的肯定推测。
［误］ Someone called you right now.
［正］ Someone called you just now.
［析］ just now有两个意思，其一是"刚才"，其二是"现在"，而right now只能用于现在的状态。just则用于完成时态，如： I have just finished my homework.
［误］ My father will be back from America at present.
［正］ My father will be back from America presently.
［析］ presently有两个意思：其一是最近，不久，其二在美语中是现在之意，与at present相同。而for the present为暂时，如： I teach English in the school for the present.
［误］ I'll be back at the moment.
［正］ I'll be back in a moment.
［析］ at the moment 其意为"现在，当时"，而in a moment意为"马上过一会"，与in a minute意思相近。
［误］ The train from Shanghai will arrive here in time.
［正］ The train from Shanghai will arrive here on time.
［析］ on time为"准时"，而in time有两个含意。其一是"及时"，如：The doctor arrived in time。其二是"将来，终究"。
［误］ I met an old friend sometimes last month.
［正］ I met an old friend sometime last month.
［析］ Sometime 过去，或者将来某时。 Sometimes 有时
如： Sometimes I go to school by bus.Some time 一些时间
如： I need sometime to do my homework.Some times 几次
如： I went to Shanghai sometimes this month.
at times 有时，偶尔
at all times 经常
some other time 改天
［误］ I had met an old friend three days ago.
［正］ I had met an old friend three days before.
［正］ I met an old friend three days ago.
* ago 用在时间状语中时，主句中谓语动词一般用过去时，而before用于时间状语时则主句的谓语动词宜用完成时态。
［误］ He studied very hard. and at the end he passed the exam.
［正］ He studied very hard, and in the end he passed the exam.
［析］ in the end＝at last 意为"最终，终于"，表达经过若干努力而达到的结果。而at the end是在某事的结束时如何如何，如：At the end of class, the teacher gave us some story books。
［误］ I will come here to help you each three days.
［正］ I will come here to help you every three days.
［析］ every three days 为"每三天"，即每隔二天，而every other day为每隔一天。
［误］ He didn't go to the cinema yesterday. and I didn't go, too.
［正］ He didn't go to the cinema yesterday and I didn't go either.
［析］ 英语中表示"也"，有4个字，also, as well, too, either，但either用于否定句中，而前3个用于肯定句中。在肯定句中too与as well一般要用在句尾，而also则可用于句中。如：She went to the party and her boy friend went there too. 又如： I've also read her other novels.
［误］ We should help the poor girl in anyway.
［正］ We should help the poor girl in any way.
［析］ anyway为"不管怎么"讲，"无论如何"，如：What a terrible accident, anyway no one was hurt.
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