1704924680
1704924681
有时也可放在后面：
1704924682
1704924683
We didn’t know what to do as we are not his parents．我们不知怎么办好，因为我们不是他的父母。
1704924684
1704924685
He could not answer the question, since he had not made up his mind．他不能回答这个问题，因为他还没拿定主意。
1704924686
1704924687
for用在书面语中的时候较多，引起的分句对前面的话进行解释，常用逗号把它和前面的分句分开：
1704924688
1704924689
He shook his head, for he thought differently．他摇了摇头，因为他有不同想法。
1704924690
1704924691
The days were short, for it was now December．白天很短，因为这时已经是12月。
1704924692
1704924693
这种用法已经有些老式。
1704924694
1704924695
另外because of也表示原因，但后面总是跟名词（或代词）：
1704924696
1704924697
She won’t come out because of asthma．由于气喘她不想出来。
1704924698
1704924699
Because of this we decided to leave early．由于这个我们决定早些动身。
1704924700
1704924702
152 become—get—grow—come—go—turn—run—fall
1704924703
1704924704
become是一个系动词，表示“变成”，后面可以跟：
1704924705
1704924706
名词：
1704924707
1704924708
Naturally he became chairman of the commission．自然他成了委员会主任。
1704924709
1704924710
His dream has now become a reality．他的梦想现在成了事实。
1704924711
1704924712
形容词：
1704924713
1704924714
She became very fond of her．她变得非常喜欢她了。
1704924715
1704924716
Gradually he became silent．慢慢地他变得沉默起来。
1704924717
1704924718
跟过去分词：
1704924719
1704924720
The room soon became crowded．房间很快变得拥挤起来。
1704924721
1704924722
Jamie was becoming annoyed with me．杰米变得对我不高兴起来。
1704924723
1704924724
除become外，还有一些词有类似意思，它们都在一定范围内表示这种变化：
1704924725
1704924726
get（在口语中用得很多，常有较活译法）：
1704924727
1704924728
She got quite impatient．她变得很不耐烦起来。
1704924729
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