第 13 讲 it 的用法及强调句型it 的用法一、it 作指示代词【完成句子】 用 one，ones，it，that，those 填空 (1) — I can't find my watch. — You haven't found ______？ If you want to buy a new ______， I suggest you buy ______ made in China. (2) We've got a big cup and two small ______. (3) The weight of an elephant is much greater than ______ of a tiger. (4) The books on the first shelf are easier than ______ on the second shelf. (5) The boy told his story and ______ of the girl upstairs. 【答案】 (1) it; one; one (2) ones (3) that (4) those / the ones (5) that / the one【结论 1】 ① 指代上文提过的事物时，it 指的是同名同物，相当于 the＋名词； ②one 指的是同名异物，表示单数可数名词相当于 a ＋名词；a / an＋形容词＋one 等于a / an＋形容词＋名词；复数形式用 ones； ③that 后面常有后置定语，有特指意义，代替不可数名词或单数可数名词，相当于 the＋名词； ④ 复数名词用 those，相当于 the ones。 【例句观察】 — Someone is knocking at the door. Who is it? — It must be Leo. He said he'd come to see me. 【结论 2】it 指代人时，常指小孩或身份不明的人。【例句观察】 It's too quiet in the room. Everyone just keeps silent. 【结论 2】it 可用以指代环境或情况。【完成例句】 根据语境补全句子 (6)— What time is it now?用心 爱心 专心1 — It's half past seven. (7)— It is spring now and it's warm these days. 【结论 4】 it 可用以指代时间、季节、天气或距离。【注意】 it 指代时间时，有如下一些句型： (1) It is time for sth. (for sb.)to do sth. / that－从句(should do / did, 必须用虚拟语气) 例： ① It's time for lunch. ② It's time for us to clean the house. ③ It's time that we should clean the house. ＝It's time that we cleaned the house. (2) It is / has been ＋ some time ＋ since－从句 (从句用一般过去时) (3) It / This is the first / second...
