高中英语词汇公开课课件(原创)

• It is useless asking her for help，she is always the last to help others.
• 译文_要__求_他__帮_忙_是__没_用_的__，_他_总__是_最_后__一_个帮助别人。
• We found it useless to persuade him to go with us .
2) im-常加在以字母m-, immoral _不__道__德__的__
pim-开po头s的sib形le容_不_词_可之__能__的_
impolite _无_礼__的__；__粗__鲁_的__
3)un-常加在名词、形容词、副词之前
unhappiness__不__幸__福_
unusual 不__寻__常__的__；_罕见的
unnecessary _不__必_要__的___ unfortunately _不__幸_运__地___
4). in-常加在名词、形容词之前
Inability__无_能__；_无__力_ Incorrect__不__正_确__的_
5. ir-常加在以r-开头的形容词前 irregular___不__规_则__的_；__不_规__律的
Unit 2
New words
Which word comes to your mind when you see the picture?
skilful
• 1. skillful adj.灵巧的，熟练的。
• skill(n. 技术)+-ful(形容词后缀)→灵巧的，熟练的。 • 1）同义词；skilled adj. 熟练的 • 2）搭配：be skillful at sth／doing sth. 在……方面
• The world’s best athletes compete in Olympic
Games.
• The little girl competed _w_i_th__her brother_f_o_rthat
cakes.
Pull through
To stay alive after you have been very sick or badly injured
译文: 他的伤势很严重，但还是有. 希望救活的。
医生们相信经过治疗她会康复 译文：
Doctors believed that he would pull through after treatment.
②pull through（使）克服困难，（使）渡过难关 e.g : Mary had real problems, but the teacher pulled her through.
unimportant 不__重__要__的__
unfriendly ___不__友_好__的__
unhealthy _不_健__康_的__；_不__益__于_健__康_的_
uncrowded 不__拥_挤__的____
unable _无__能_的__；_不__会_的_
unfair___不_公__平_的__；_不__公_正__的__ unfamiliar _不__熟_悉__的____
翻译句子： 抱怨是没有用的。
__It _is_u_se_le_s_s_to_c_o_m_p_la_in_. __________ _I_t i_s _us_e_le_s_s _co_m_p_la_in_in_g_. ____________ _I_t i_s _no__us_e_c_o_m_pl_ai_ni_n_g._____________
pull through （从重病或重伤中）恢复健康，帮助（某人）康复 e.g : Good nursing will pull them through. 好好护理可使他恢复过来
[巩固练习] His injuries are serious but he is expected to pull through.
“无”、“不（是）”、“未
1)dis-常加在名词、形容词、动词之前。
Байду номын сангаас
disagreement _分__歧_；__不__一__致_
disappear 消__失____
disadvantage _不_利__条__件__；__缺_点
dishonest __不__诚_实__的___
dislike _不__喜__欢_
很熟练。
• 他擅长教学 • ——He—is—sk—illf—ull —at —tea—ch—ing—. ——————————
• 3）辨析：skillful 和 skilled
• Skillful：强调手的灵巧 • Skilled：强调专门技术 • A_s_k_ill_e_d_job
Which word comes to your mind when you see the picture and the phrase?
• 译文_我_发__现_要__说_服_他__跟_我_一__起_走_是__没_用_的_______
• It is no use trying • 译文_试_也__是_没__用_的_____________________
用法：it is useless to do/doing sth it is no use doing sth
The boy is 18 years old He can not take care of himself.
useless
useless adj. 无用的。无效的. useful:有用的
use(n. 用处)+-less(否定后缀，构成形容词)+无用的；无效的
否定前缀主要有dis-, il-, im-, in-, ir-和un-，可译成汉语“非”、
compete
compete vi.比赛，竞争 compete(竞争)→complete ( v. 完成 )
• 1）派生词：competition n. 竞争；competitor n. 竞争者
• 搭配：compete against／with sb. in sth. ／for sth. 在某方面／为得到某物与某人竞争
尽管任务很艰难，但是我们克服困难完成任务。 译文： Through the task is hard, we can pull it through