人教版英语必修三第四单元词汇知识点

2.harmful/harm/harmless/ harmlessness: Be harmful to :对...有害 do harm to sb=do sb harm
1) This object gives off _h_a_r_m_f_u_l____gases which may do _h_a_rm______to our
3．puzzle vt.使迷惑；使为难；使窘困；感到迷惑n.猜谜；难题；谜 Puzzled：adj.感到困惑的 puzzling: adj.令人困惑的 be puzzled about：对某事迷惑不解 it is a puzzle to sb:对某人来说是一个谜 puzzle sb.使某人为难 puzzle over sth 苦苦思考，努力思考
physical
二、短语与拓展 1．cheer _u_p_高兴起来；振作起来
c_h_e_e_r_s_干杯
2．now _th_a_t_既然 3．break _o_u_t_突发；爆发
4．give _b_ir_th__ to产生；分娩 5．_la_y__ eggs下蛋
6．prevent..._fr_o_m__阻止；制止
6．After several years of practice，I think I will finally_______spoken
English.
get the hang of
7．She married at 17 and ___g_a_ve__b_ir_th__to_____her first child shortly after.
break out get the hang of in time
give birth to
1．—I thought I was speaking English fairly well.Now I’m not so sure.—_c_h_e_e_r_u_p__,boy.Anyway，Rome wasn’t built in a day.
5..in time及时；终于；总有一天 on time准时；按时
in no time立即；马上 at no time 绝不
at a time一次；每次 at one time 曾经，
at times有时 frome time to time 有时， 不时的
all the time 一直，总是 ahead of time 提前
understand what I said.
2).The students were_p_u_z_z_li_n_g_ over the_p_u_z_z_li_n_g_ problem，listening to
the teacher with a _p_u_z_z_le_d__expression on their faces.(puzzle) 3).I’ve been_p_u_z_z_l_in_g_(puzzle) over all the figures，trying to find what
选词填空：unlikely, likely; unlike; like
1) It’s u_n__li_k_e_him to be so hard –working. 那么勤奋不像他平常的样子。 like
2) A Tsunami, ____a big earthquake, can do great damage to human beings.
by the time 到。。。时间为止 every time 每次 1). Can you finish your home work _i_n__ti_m_e______.
2).Opportunities are present __a_ll_t_h_e_t_im__e_ but often they go by unnoticed.
health. You must make the object _h_a_r_m_l_e_s_s__before you use it. (harm) 21) 污染的河水会对环境造成很大的危害。 __P_o_l_lu_te_d__w_a_t_e_r _w_i_ll _b_e_h_a_r_m_f_u_l _to__th_e__e_n_v_ir_o_n_m_e(hnat.rmful) _P_o_llu_t_e_d_w__a_te_r_w__ill_d_o__h_a_rm__t_o_t_h_e_e_n_v_i_ro_n_m__e_n_t.(harm) 2)众所周知，过量喝酒对你的身体有害。 ①What is known to us is that drinking too much _is__h_a_rm__fu_l_t_o_y_o_u_r_b.ody. ②What is known to us is that drinking too much __d_o_e_s_h_a_r_m__to__y_o.ur body.
8．She bought a heavy curtain to_______b_lo_c_k__o_u_t ______the light.
三、考点突破 1．exist vi.存在；生存 There exist...有……；存在……
1).There existed a close relationship between families and their milkmen. 2）There exists a good way to solve the existing problem in geography. 3).._T_h_e_re__e_x_is_t_s_m__a_n_y_c(h存an在ce许s 多机会)for regional development. 4)._B____a certain doubt among the workers as to the necessity of the work. A．It existed B．There existed C．There had D．It had [真心提示] exist没有被动语态t______.
2．_W__a_tc_h__o_u_t _fo_r___cars when you cross the street.
3．When Ella heard that her father was safe she immediately__c_h_e_e_r_e_d_u_p.
k_e_e_p_．..from阻止
7．watch _o_u_t __当心；密切注视 look o_u_t___当心
8．get the h_a_n_g___ of熟悉；掌握 9．block _o_u_t_挡住(光线)
10．in one’s _t_u_rn__轮到某人；接着
11．depend _o_n__依靠
海啸，像大地震一样，对人类造成很大伤害。
3) John is ___l_ik__e_ly___to be in London this autumn. （很可能在伦敦） 4) Since their parents strongly disagree, they are _u__n_li_k_e_ltyo marry.
1).What puzzles me is why they didn’t show up. 2).When you said you were in law school，I was more puzzled．。 3).Her puzzled look on her face suggested she didn’t understand what I said.
Unit 4 Astronomy： the science of the stars
Words and Expressions
1一. v．i.存单在词；拓生展存_e_x_i_st_→n.生存；存在 existence 2． n．谜；难题 vt.& vi.(使)迷惑；(使)为难___p_u_zz_l_e___→adj.令人 迷惑的 puzzling→adj.感到迷惑的 puzzled →n.困惑 puzzlement 3． n．宗教；宗教信仰_re_l_ig_io_n_____→adj.宗教的 religious 4． adj.猛烈的；激烈的；_v_io_l_e_n_t →adv.猛烈地 violent→lyn.猛烈； 激烈 violence 5.不同；不像u_n_l_ik_e→(反义词) prep.like →v.& n．不喜欢 dislike 6． adj.有害的__h_a_r_m_f_u_l ____→n.有害；伤害 harm→adv.有害地； 伤害地 harmfull→y (反义词) adj.无害的 harmless 7.温和的；文雅的_g_e_n_t_le→adv.温柔地 gently →n.绅士gentleman 8． n．物理学家_p_h_y_s_ic_is_t__→n.物理_p_h_y_s_i_c_s_ →adj.物理的
4）)The student was _p_u_z_z_l_ed__a_b_o_u_t _ what to do next. 5)It_i_s_a__p_u_z_zl_e_t_owmhyeshe wants to change her job.(对我来说是个谜) 1).Her _p_u_z_z_le_d__(puzzle) look on her face suggested she didn’t
__re_l_y____ on
12．make up one’s __m_i_n_d__决心
二.短语复现
(in time，block out，break out，cheer up，watch out for，
now that) 1．The clouds
have
_b_lo_c_k_e_d_____
the
happened to the missing money.