Unit 4 Information Technology Lesson 3 Internet and friendships 课件-2023-2024学年高中英语北师大版（2019）必修第二册

U4 Lesson 3 词汇学习 1. harm v./n..-harmful/harmless adj. 2. argue v.-argument n.-arguing-argued 3. re+place=replace v.-replacement n. 4. hug v./n.-hugged/hugging 5. concentrate v.-concentration n.-concentrated adj. 6. concern n./v.-concerned adj-concerning adj.令人担忧的；prep. 关于 7. reward v.-rewarding adj. 8. addition n.-additional adj.-additionally adv. 1. base n./v.-basis n. 2. per（每 ）+cent（百）=percent 3. focus v./n.-focused adj 专注的 4. maintain v.-maintainable adj. 可持续的 5. smart+phone=smartphone 6. limit v./n.-limiting adj.-limited adj.有限的 7. create v.-creative adj.-creativity n. 8. provoke v.激起，激发 9. author(作者）+ity=authority n. /ˈbeɪsɪs/ harm /hɑːm/ vt./n. 伤害, 损害 e.g. Smoking can harm your health. do harm to sth. 对...造成伤害 harmful (adj.) 有害的 be harmful to sth. 对...有害 — harmless 无害的 Smoking can do harm to your health. Smoking can be harmful to your health. 【辨析】　wound, injure, hurt与harm argument /ˈɑːɡjumənt/ n. 论点; 论据 have an argument with sb about/over sth. argue (v.) 争论 e.g. We had an argument with the waiter about the bill. argue with sb. about/over sth. 与某人就某事进行争论 replace /rɪˈpleɪs/ vt. 取代; 接替 replace ... with/by ... (用...代替...) be replaced with/by ...(被...代替) e.g. The labour work will be replaced with machines. replacement (n.) 代替 hug /hʌɡ/ n. & vt. 拥抱; 紧抱 hug —— hugged —— hugged —— hugging e.g. They hugged each other. give sb. a hug = hug sb. free hugs免费拥抱（抱抱团） concentrate /ˈkɒnsntreɪt/ vi. 专注, 专心; 集中注意力 concentrate on sth. 聚精会神于(做)某事 concentrate one’s attention on ... e.g. I can't concentrate with all that noise going on. concentration (n.) 专注; 专心 concerned /kənˈsɜːnd/ adj. 关切的,关心的 be concerned with 关心…… e.g. People are only concerned with their online popularity. be concerned about (担心...) rewarding /rɪˈwɔːdɪŋ/ adj. 有益的; 有意义的 e.g. It is a rewarding experience. reward (n.) 回报;奖赏 (vt.)报答 as a reward (for ...) 作为(对...的)报酬; 奖赏 give a reward to sb. (for ...) 因为...而给sb.奖赏 addition /əˈdɪʃn/ n. 增添; 添加 in addition 除此之外 what’s mo