UC知道几道选择题～好心人帮忙下哟！
来源：百度知道 编辑：UC知道 时间：2024/06/17 13:17:24
a.since b.after c.when d.before
They won't be back home until the work___
a.was done b.will be done c.is done d.had been done
Olive was so busy___a novel that he ___to have dinner
a.reading,forgets b.to read, forgets
c.to read, forget d.reading,forgot
They set out__for the___boy
a.searching , losing b.searching,lost
c.to search,lost d.to search,missed
She ___the book and wanted to find the answer.
a.looked through b.looked over c.looked at
Please___before you decide___to do it.
a.think it about,what b.think it over,how
c.think it about,how d.think it of,what
麻烦每道题都说一下解题思路！！！！
高分悬赏！请麻烦回答挖～～～～～～时间紧迫ING！！！！！
c/c/d/c/a/b
第一题：
_When_you go across the road,you must be careful
a.since b.after c.when d.before
选 C ,When.
A since 是“自从...后”的意思，以since开头的状语从句后面的主句一般都是现在完成时。如：Since the war, I have been there many times. (自那次战争以来，我曾去该地多次。)
B.after，是“在...之后”的意思，如选择B，则字面意思为“当你过马路后，一定要小心。”明显不符合常理。
C.when,是“当...时候”的意思，如：When I came home my wife was cooking dinner.（我回家时，妻子在做晚饭。）
D.before,是“当...之前”的意思，如选择D，则字面意思为“当你过马路之前，一定要小心。”也不符合常理。
第二题：
选择c。
They won't be back home until the work___
a.was done b.will be done c.is done d.had been done
这道题是考察学生是否掌握“主将从现”的典型题目。如掌握了这道题，以后类似的题目绝对不会再错。
所谓“主将从现”是指主句是将来时，从句一定是现在时。
这道题的主句是“They won't be back home”，从句就应当是“until the work is done”——现在时态。
a.was done 是过去时态；
b.will be done 是将来时代；
d.had been done 是过去完成时态；
所以a,b,d,都不正确。
第三题
选择d。
Olive was so busy_reading_a novel that he _forgot_to have dinner.
a.reading,forgets b