【正文】 配，其動(dòng)詞必須和主語在人稱和數(shù)上保持一致，這就叫主謂一致?？疾橹髦^一致?！究键c(diǎn)定位】：考查there be句型。20． Drive slowly, Mary. ______ is something ahead on the road.A．It B．This C．That D．There【答案】D【解析】試題分析：句意：開慢點(diǎn)，瑪麗。 nor既不…也不…；C. either。 but also【答案】C【解析】句意：只有一個(gè)位置，老板必須選擇或者杰克或者湯姆作為經(jīng)理。 Tom to be a manager.A．both。19．There is only one position. The boss has to choosemake讓，使役動(dòng)詞，make sb. do ，是固定結(jié)構(gòu)，可排除C項(xiàng)。17．Smog and haze is a kind of air pollution. It _______ people _____ about their health.A．make, worry B．make, be worriedC．makes, worried D．makes, worry【答案】D【解析】【詳解】句意：霧霾是一種空氣污染。根據(jù)句意，故選D。老齡化是一個(gè)大問題。 is D．Two –third。主語A smile是單數(shù)名詞，因此謂語動(dòng)詞要使用第三人稱單數(shù)形式；故本題選A項(xiàng)costs。13．A smile ____________ nothing, but gives much.A．costs B．spendsC．cost D．spend【答案】A【解析】考查動(dòng)詞辨析。根據(jù)句意，本題表示過去常常用，用used to+動(dòng)詞原形。am，is和are都是be動(dòng)詞的形式，這句話使用的是there be句型，be動(dòng)詞的單復(fù)數(shù)形式應(yīng)根據(jù)后面的主語形式一致，about 2,000 pandas是復(fù)數(shù)，故應(yīng)選C。9．—How many girls are there in your class?—________ them __________ over twenty.A．A number of, are B．The number of, areC．A number of, is D．The number of, is【答案】D【解析】【分析】【詳解】試題分析：句意為：你們班有多少女生？女生的人數(shù)超過20人。used to be過去是， may be可能是， used to have過去有，may have可能有。 do【答案】B【解析】句意：安迪和他的父母去了香港，他們將買一些東西。7．Andy, with his parents, Hong Kong, and some shopping by them.A．have gone to。A選項(xiàng)是一般將來時(shí)的there be句型，B選項(xiàng)是一般過去時(shí)的there be句型，C選項(xiàng)是一般現(xiàn)在時(shí)的there be句型；根據(jù)句意這里是一般現(xiàn)在時(shí)，故選C。根據(jù)three to five times a week“一周三到五次”可知，用一般現(xiàn)在時(shí)，排除C；“分?jǐn)?shù)或者百分?jǐn)?shù)+of+名詞”作主語，謂語與of后的名詞保持一致，即與students保持一致，students為復(fù)數(shù)，故選B。3．There ________ a book sale in our school library once a year.A．is B．was C．a(chǎn)re D．were【答案】A【解析】【詳解】句意：我們學(xué)校圖書館每年有一次圖書銷售?？键c(diǎn)：考查動(dòng)詞時(shí)態(tài)。根據(jù)時(shí)間狀語next week可知這里句子應(yīng)該用一般將來時(shí)，這里是there be的將來時(shí)應(yīng)是there will be；故選B。not only…but also連接兩個(gè)主語的時(shí)候，謂語動(dòng)詞的數(shù)由離其最近的主語來決定，即就近原則，所以此處要根據(jù)he來確定謂語動(dòng)詞的形式；因?yàn)楹竺媸莍nterested in，所以用be interested in“對…感興趣”，所以謂語動(dòng)詞用is；故答案選D。4．Eighty percent of the students in this school ________ three to five times a week.A．exercises B．exercise C．exercising【答案】B【解析】【詳解】句意“在我們學(xué)校80%的學(xué)生一周鍛煉三到五次”。你知道在哪能買到好食物嗎？當(dāng)然！拐角處有一家餐館。故選A。 will do D．has been to。8．Mr Jiang isn’t as busy as before because there no home robot to help him．A．used to be B．may be C．used to have D．may have【答案】A【解析】【詳解】句意：江先生不如以前忙，因?yàn)檫^去沒有家用機(jī)器人來幫助他。故選A。10．. In the past few years there ______ great changes in my hometown.A．have been B．were C．had been D．a(chǎn)re【答案】A【解析】略11．Let’s save pandas! There only about 2, 000 pandas living in the forests now .A．a(chǎn)m B．is C．a(chǎn)re【答