2.He cast his net _______ third time,and drew in a lot of stones.
A.a B an C the D /
third是序數(shù)詞,前面一定是the,沒(méi)有為什么,固定搭配!
5.This is ________ one-foot-deep hole.
A.A; a B A; the C The; a D /; a
為什么不是D?（the不是修飾特定的物體嗎?）
one-foot-deep可以忽略不看,重點(diǎn)在hole,一個(gè)洞=a hole
22.The policeman caught the thief by _______ arm.
A.his B.her C.an D.the
為什么不是A?而是D?
arm是身體特指器官,當(dāng)然用the
26.______ army men are running in the fields.They came back from ______ front last week.
A.The; / B An; the C /; the D The; the
Front last week 為什么不是A?而是D?
通常我們說(shuō) in front of the .這里的介詞在前面(form),所以后面跟the
27.Pethe spent half an hour in doing _______ work.
A an B a C the
為什么不是B,work不是泛指嗎?而答案是C
應(yīng)該說(shuō),這里強(qiáng)調(diào)Pethe做了這項(xiàng)work,所以要加定冠詞the
34.We all know that______ water boils at 100℃.
A.a B an C the D /
為什么不是C,the不是特指水這個(gè)物質(zhì)嗎?怎么會(huì)是D?
這里是說(shuō)明一種普遍的現(xiàn)象(水在100度的時(shí)候沸騰,所以這里的水是泛指)