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1 Complete each sentence with the correct form of the word(s) in brackets. 用括号中所给单词的正确形式补全句子。
(1) Over the past few years, the smart home industry
(2) Smart-home devices
(3) Many customers
(4) Up to now, people
(5)
(1) Over the past few years, the smart home industry
has started
(start) to grow.(2) Smart-home devices
have sensed
(sense) a future audience since last century.(3) Many customers
have not got
(not get) ready for smart homes yet.(4) Up to now, people
have used
(use) many smart speakers for fun.(5)
Has
the smart-home company explained
(explain) the benefits of its product to its future customers yet?答案
(1) has started (2) have sensed (3) have not got (4) have used (5) Has ... explained
解析
【分析】本题主要考查现在完成时的运用，解题关键是识别句中的现在完成时标志性时间状语（如over the past few years、since last century、yet、up to now等），结合主语单复数确定助动词（have/has），再将括号内动词变为过去分词，同时注意否定句、疑问句的结构。
【解析】
(1) 时间状语“Over the past few years”是现在完成时标志，主语“the smart home industry”为单数，故用has + start的过去分词started，填has started。
(2) 时间状语“since last century”是现在完成时标志，主语“Smart-home devices”为复数，故用have + sense的过去分词sensed，填have sensed。
(3) 时间状语“yet”用于现在完成时否定句，主语“Many customers”为复数，故用have not + get的过去分词got，填have not got。
(4) 时间状语“Up to now”是现在完成时标志，主语“people”为复数，故用have + use的过去分词used，填have used。
(5) 时间状语“yet”用于现在完成时疑问句，主语“the smart-home company”为单数，疑问句将助动词has提前，故填Has；explained。
【答案】
(1) has started
(2) have sensed
(3) have not got
(4) have used
(5) Has ... explained
【知识点】
现在完成时；动词过去分词；时态与时间状语匹配
【点评】
本题聚焦现在完成时的基础用法，核心是掌握现在完成时的标志性时间状语，明确其结构（have/has + 过去分词），区分主语单复数对助动词的影响，以及否定句、疑问句的结构，是英语时态的基础题型，牢记时态规则即可轻松解答。
【难度系数】
0.7
【解析】
(1) 时间状语“Over the past few years”是现在完成时标志，主语“the smart home industry”为单数，故用has + start的过去分词started，填has started。
(2) 时间状语“since last century”是现在完成时标志，主语“Smart-home devices”为复数，故用have + sense的过去分词sensed，填have sensed。
(3) 时间状语“yet”用于现在完成时否定句，主语“Many customers”为复数，故用have not + get的过去分词got，填have not got。
(4) 时间状语“Up to now”是现在完成时标志，主语“people”为复数，故用have + use的过去分词used，填have used。
(5) 时间状语“yet”用于现在完成时疑问句，主语“the smart-home company”为单数，疑问句将助动词has提前，故填Has；explained。
【答案】
(1) has started
(2) have sensed
(3) have not got
(4) have used
(5) Has ... explained
【知识点】
现在完成时；动词过去分词；时态与时间状语匹配
【点评】
本题聚焦现在完成时的基础用法，核心是掌握现在完成时的标志性时间状语，明确其结构（have/has + 过去分词），区分主语单复数对助动词的影响，以及否定句、疑问句的结构，是英语时态的基础题型，牢记时态规则即可轻松解答。
【难度系数】
0.7
2 Answer the questions according to your own situation. 根据自身情况回答问题。
Smart devices in my home
• Smart bulbs • Smart switches • Smart plugs（电源插座）
• Smart TVs • Smart door locks • Smart alarm clock
• Speech recognition system • ...
(1) Which device(s) have you already had in your home? When did you/your parents buy it/them?
(2) Which smart home device(s) have you ever used? How did you feel when you used it/them?
(3) Which smart home device(s) have you ever heard about? What do you know about it/them?
(4) Which smart home device(s) do you wish to have? Why?
Smart devices in my home
• Smart bulbs • Smart switches • Smart plugs（电源插座）
• Smart TVs • Smart door locks • Smart alarm clock
• Speech recognition system • ...
(1) Which device(s) have you already had in your home? When did you/your parents buy it/them?
(2) Which smart home device(s) have you ever used? How did you feel when you used it/them?
(3) Which smart home device(s) have you ever heard about? What do you know about it/them?
(4) Which smart home device(s) do you wish to have? Why?
答案
(Answers may vary.)
(1) I have already had a smart lock in my home. My parents bought one two years ago for our new house.
(2) I have ever used smart bulbs. I felt amazed when I used them.
(3) I have ever heard about the speech recognition system. It can help new parents to know why their baby is crying.
(4) I wish to have a smart wall. It serves as a screen. Sometimes I watch films on it without going to the cinema. Sometimes I visit places of interest around the world without stepping outside.
(1) I have already had a smart lock in my home. My parents bought one two years ago for our new house.
(2) I have ever used smart bulbs. I felt amazed when I used them.
(3) I have ever heard about the speech recognition system. It can help new parents to know why their baby is crying.
(4) I wish to have a smart wall. It serves as a screen. Sometimes I watch films on it without going to the cinema. Sometimes I visit places of interest around the world without stepping outside.
解析
【分析】
本题为开放性英语表达题，需结合自身实际情况，针对每个问题的核心要求（已有设备及购买时间、用过的设备及感受、听过的设备及了解内容、想要的设备及原因），用正确的英语句式作答，确保表达清晰、符合语法规范。
【解析】
解答时，需逐一对应每个问题的提问要点：(1)明确说出家中已有的智能家居设备，并说明购买时间（主语可结合自身或父母）；(2)列举用过的智能家居设备，描述使用时的感受；(3)说明听过的智能家居设备，简述对其的了解；(4)说出希望拥有的智能家居设备，阐述想要的原因。作答时注意使用正确的时态和常用表达，符合英语表达习惯。
【答案】
I have already had a smart lock in my home. My parents bought one two years ago for our new house.
I have ever used smart bulbs. I felt amazed when I used them.
I have ever heard about the speech recognition system. It can help new parents to know why their baby is crying.
I wish to have a smart wall. It serves as a screen. Sometimes I watch films on it without going to the cinema. Sometimes I visit places of interest around the world without stepping outside.
【知识点】
英语书面表达、开放性问答
【点评】
本题结合生活实际，考查学生对智能家居的认知及英语表达能力，答案具有开放性，鼓励学生结合自身真实情况作答，体现了英语学习的实用性。
【难度系数】
0.7
本题为开放性英语表达题，需结合自身实际情况，针对每个问题的核心要求（已有设备及购买时间、用过的设备及感受、听过的设备及了解内容、想要的设备及原因），用正确的英语句式作答，确保表达清晰、符合语法规范。
【解析】
解答时，需逐一对应每个问题的提问要点：(1)明确说出家中已有的智能家居设备，并说明购买时间（主语可结合自身或父母）；(2)列举用过的智能家居设备，描述使用时的感受；(3)说明听过的智能家居设备，简述对其的了解；(4)说出希望拥有的智能家居设备，阐述想要的原因。作答时注意使用正确的时态和常用表达，符合英语表达习惯。
【答案】
I have already had a smart lock in my home. My parents bought one two years ago for our new house.
I have ever used smart bulbs. I felt amazed when I used them.
I have ever heard about the speech recognition system. It can help new parents to know why their baby is crying.
I wish to have a smart wall. It serves as a screen. Sometimes I watch films on it without going to the cinema. Sometimes I visit places of interest around the world without stepping outside.
【知识点】
英语书面表达、开放性问答
【点评】
本题结合生活实际，考查学生对智能家居的认知及英语表达能力，答案具有开放性，鼓励学生结合自身真实情况作答，体现了英语学习的实用性。
【难度系数】
0.7
