Please turn to page _____ and take a look at the picture on it.

A. the eightieth B. eightieth C. eighties D. eighty

D 【解析】句意：請(qǐng)翻到80頁(yè)并且看看上面的圖片。表示“第......頁(yè)”時(shí)，可用“名詞+基數(shù)詞”，page eighty意為“第80頁(yè)”，故選D。

We are going on holiday in the _____ week of July.

A. two B. twice C. second D. /

C 【解析】句意：我們將要在七月的第二周去度假。修飾單數(shù)可數(shù)名詞，表示排列順序，要用序數(shù)詞，故選C。

I have already tried twice. Now let me have _____, will you?

A. the third try B. a third try C. third try D. this third try

B 【解析】句意：我已經(jīng)嘗試了兩次。現(xiàn)在讓我試第三次，會(huì)嗎？序數(shù)詞前加不定冠詞a，表示“又一，再一”，故選B。

Usually children have ____ holiday in summer.

A. an 8-week B. a 8-week C. an 8-weeks D. a 8-weeks

A 【解析】句意：通常兒童會(huì)在夏天有8周的假期。這是一個(gè)由“數(shù)詞+連字符+單數(shù)可數(shù)名詞”構(gòu)成的復(fù)合形容詞；且基數(shù)詞8是以元音音素開(kāi)頭事物，所以前面要用不定冠詞an，故選A。

It’s my __ time to come to the bookshop this month because most of the book in it are my favourite.

A. forth B. four C. fourth D. the fourth

C 【解析】句意：這是我本月第四次來(lái)這家書(shū)店，因?yàn)檫@本書(shū)的大部分內(nèi)容都是我的最愛(ài)。修飾單數(shù)名詞，表示順序用序數(shù)詞。forth有拼寫(xiě)錯(cuò)誤，設(shè)空處前有形容詞性物主代詞my，則不用定冠詞the，故選C。

A quarter to four is _____.

A. 3:15 B. 3:45 C. 4:15 D. 2:45

A 【解析】“整點(diǎn)過(guò)1至30分鐘”可用“分鐘數(shù)+past+時(shí)鐘數(shù)”表示；“整點(diǎn)差1到29分鐘”可用“分鐘數(shù)+to+時(shí)鐘數(shù)”表示，故選A。

Unit _____ is easy but _____ unit is difficult.

A. sixth; seven B. six; seven C. sixth; the seventh D. six; the seventh

D 【解析】句意：第六單元很容易，但第七單元很難�？疾閿�(shù)詞。第六單元有兩種表達(dá)法：1.用基數(shù)詞表達(dá)，單元（unit）和六（six）第一個(gè)字母都要大寫(xiě)，即Unit Six；2.用序數(shù)詞表達(dá)，the sixth unit；結(jié)合句意和語(yǔ)境可知選D。

About _________ of the students in Grade Nine this year were born in the ________.

A. three five; 1960s B. three fifths; 1990s C. third fifth; 1997 D. third fifths; 1990s

B 【解析】 試題句意：今年在八年級(jí)大約有五分之三的學(xué)生都出生在二十世紀(jì)九十年代。在英語(yǔ)中的分?jǐn)?shù)，通常分子用基數(shù)詞，分母用序數(shù)詞，當(dāng)分子大于一時(shí)，分母要用復(fù)數(shù)形式，所以選B。

When he was ________, Joe went to United States.

A. on his twenties B. in the twenties C. in his twenties D. in his twenty

C 【解析】句意：當(dāng)他二十多歲的時(shí)候，Joe去了美國(guó)。C “在某人幾十多歲”用“in one’s + 整10的基數(shù)詞的復(fù)數(shù)形式”表示。故選C。

Open your book, and write down the answers in the form on ________.

A. the 101st page B. 101 page C. Page 101st D. the Page 101

A 【解析】句意：打開(kāi)你的書(shū)，把答案寫(xiě)在第101頁(yè)里面。編號(hào)的表達(dá)方式為：“名詞+基數(shù)詞”或者“定冠詞+序數(shù)詞+名詞”。故選A。