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习题的讲解一(初二英语)

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习题的讲解一(初二英语)
在某些方面,我们的生活比以前好多了.
In some ways,our life is better than before.
在这个答案中,Life 可不可以换成lives,is改为are?
before可不可以改为past?
efore不可以改为past,因为:
past
a.
1.过去的;刚过去的
2.过去了的;完了的
The danger is past.
危险已过.
3.以前的;前任的[B]
John Smith is a past president of our club.
约翰·史密斯是我们俱乐部的前任主席.
4.【语】过去(时)的[B]
prep.
1.(指时间、数量等)过;通过,经过
The boys walked past our house.
孩子们走过我们的房子.
2.(指范围、程度、能力等)超过
Some of his poems are past comprehension.
他的某些诗作无法理解.
n.
1.过去,昔日[the S]
In the past he had to read by candlelight.
过去他只得在烛光下攻读.
2.往事;经历;不光彩的往事[the S]
3.【语】过去时;(动词的)过去式[the S]
ad.
1.过;经过;越过
I watched the people hurry past.
我看着人们匆匆而过.
before
prep.
1.在...以前
Only two days remained before the examination.
考前只剩下两天了.
2.(指顺序、重要性等)在...之前,先于
Your name comes before mine.
你的名字在我之前.
Pride comes before a fall.
骄必败.
3.由...考虑中
We will put the matter before the committee.
我将把此事提交委员会考虑.
4.在...前面;在...面前
She said she had never spoken before an audience.
她说她从未在大庭广众讲演过.
ad.
1.较早
Come at two o'clock,not before.
两点钟来,不必再早了.
2.以前;曾经
He was never late before.
过去他从不迟到.
Have you two met before?
你们两人以前见过面吗?
3.在前;向前
Several soldiers went before to scout.
数名士兵在前面探路.
conj.
1.在...以前
Check it carefully before you hand it in.
交来之前仔细核对一下.
2.与其...宁可
I'd die before I'd tell.
我宁死也决不会说出来.
3.否则,要不然
Get out before I call the police.
滚开,否则我叫警察.