Ancient man attempted to change the weather by using
magic.While experience taught him this was impossible, __1__
he tried to forecast weather conditions.Even earlier in __2__
1000 B.C.there were weather seers in Babylon----and
priests clever enough to denounce as frauds those predicted __3__
the weather a year in the advance.Some forecasters used __4__
methods that seemed to take no connection with the actual __5__
factors controlled the weather.Chickens and other animals __6__
were sacrificed and their intestines poked to find signs
indicating rain and drought.Somewhat more scientific were __7__
predictions based on vegetation:"Onion's skin very thin ,mild
weather coming in.Onion's skin thick and tough, coming
weather is cold and rough." Insects and animals were also __8__
favorite weather clues: "Before the glowworm lights his __9__
lamp，then the air is always damp ." "If spiders their cobwebs
forsake，the weather will for certain break ." "If frogs remained
in pools，the weather will be fine .If they were seen on rocks, __10__
rain and cold were due." It's difficult to say whether this rhyme
should be taken seriously : " Hark，I hear the asses bray .Me thinks
we'll have some rain today ."
答案及解析：
1.While—When或After
本句的this指代的是to change the weather by using magic.when/after 引導(dǎo)時(shí)間狀語
2.in—than
earlier是early的比較級(jí)，其后應(yīng)有than
3.those之后加who
who引導(dǎo)定語從句
4.刪除advance前的the
in advance為習(xí)語
5.take—have
have connection with 為習(xí)語
6.controlled—controlling或在controlled前加that/which
controlling the weather 或that/which controlled the weather做定語修飾the actual factors
7.and—or
rain和draught只能是二者之一
8.刪除is
與上文平衡，均為省略句
9.before—when/if
條件句
10.will—would
if 引導(dǎo)的是條件句用的是remained一般過去時(shí)