1. He was ill, and therefore could not come.
    他病了，所以未能来。

2. He was down with the flu, and therefore couldn''t come to the party.
    他患了流行性感冒，因此未能前来参加宴会。

3. He was the only candidate; therefore, he was elected.
    他是唯一的候选人，因此，他当选了。

4. I was ill, and therefore could not come.
    我病了，所以没能来。

1. therefore的反义词

1. 表示结果：我们知道遗传标记提供独有的识别特征(unique identification)把人们连接在一起,形成家族树. 换句话说,能对家族树进行研究,是因为遗传标记的独71. A)从上下文意思判断,此处表示结果(therefore),而不是转折(nevertheless),让步(still)或对比(conversely),A正确.

1. 所以;因此;因而
    You use therefore to introduce a logical result or conclusion.

    e.g. Muscle cells need lots of fuel and therefore burn lots of calories...
           肌肉细胞需要很多能量，所以会燃烧大量卡路里。
    e.g. Nothing was to prevent him now from becoming the richest, and therefore the happiest, man in the world.
           现在什么也阻挡不了他成为世上最富有因而也是最幸福的人。

1. (used to introduce a logical conclusion) from that fact or reason or as a result

    e.g. therefore X must be true
           the eggs were fresh and hence satisfactory
           we were young and thence optimistic
           it is late and thus we must go
           the witness is biased and so cannot be trusted

    Synonym: hencethencethusso

2. as a consequence

    e.g. he had good reason to be grateful for the opportunities which they had made available to him and which consequently led to the good position he now held

    Synonym: consequently