英语必修四第五单元ppt

Derivation: add letters to the
派生
beginning or the end of
a word. 1) 前缀 (prefix):
(1) dis-: disagree, dislike, disappear
(2) in- (il-, im-, ir-): incorrect,
2. 合成形容词 (1) 过去分词或带ed词尾的词构成。
absent-minded 心不在焉的 grey-haired 头发灰白的 (2) 动词的ing或另一词构成 long-suffering 长期受苦的 far-reaching 深远的(影响)
3. 合成动词及合成副词 water-ski 滑冰 overeat 吃得太多 baby-sit 看孩子 empty-handed 一无所获的
(4) adv.—v.: down (adv.)—down (v.)
Conversion: change the part of
转化
speech of a word.
(1) v.—n.: charge (v.)—charge (n.) (2) n.—v.: hand (n.)—hand (v.)
(3) adj.—v.: clean (adj.)—clean (v.)
impossible, irregular,
(3) un-: unhappy, unable, unfit,
(4) non-: nonstop, nonverbal (非语言的) (5) re-: rewrite, review 2) 后缀(suffix): (1) 构成名词：-er, -ese, -ist, -ian,
New words can also be formed by using prefixes and suffixes. Try to find and underline the prefixes or suffixes in the words below. Then write out the original words.
-ment, -tion, -ness, -th. buyer, Chinese, socialist, musician agreement, collection, illness, truth
(2) 构成形容词: -al, -an, -ful, -ing, -y, -less national, American, careful, exciting, cloudy, useless
Compound words are made from two words: two separate words (roller coaster) one word (craftsmen) or words joined by a hyphen (oldfashioned). Find the compound nouns in the reading passage.
Noun verb Adjective Adverb
amusement amuse amusing amusingly
admission admit admissible admissibly imagination imagine imaginative imaginatively settlement settle settled equipment equip equipped attraction attract attractive attractively
unchangeable adj. _c_h_a_n_g_e_ dislike v. __li_k_e______ impossibility n. _p_o_s_s_ib_l_e__ unfriendly adj. __f_r_ie_n_d____ overwork v. ___w_o_r_k________ misunderstanding n. __u_n_d_e_rs_t_a_n_d__ athletic adj. _a_th_l_e_te_________ misread v. _r_e_a_d____ translator n. __t_ra_n_s_l_a_te_____
(3) 构成动词: -fy, -is (z)e: beautify, realize
(4) 构成副词: -ly: badly
(5) 构成数词: -teenBiblioteka Baidu -ty, -th thirteen, sixty, twelfth
Fill in the table with the different forms of the words.
_ro_l_le_r__c_o_a_st_e_r_, _w_h_i_c_h_e_v_e_r,_w__h_a_te_v_e_r_,_f_re_e_-_ _fa_l_l,_w__h_e_r_ev_e_r_,_s_o_u_t_h_e_a_st_e_r_n_,_i_n_d_o_o_r,_____ _o_u_td_o_o_r_,_c_r_a_f_ts_m__e_n_, _o_ld_-_f_a_sh__io_n_e_d_,_s_t_e_a_m__en__g_in_e_,_w_o_r_l_d_-_fa_m__o_u_s_,_h_o_r_s_e_b_a_c_k_______
Compound合成 1. 合成名词
(1) n.+ n. air conditioner 空调 blood pressure 血压 income tax 所得税 credit card 信用卡
(2) adj. + n. central bank 中央银行 fast food 快餐
solar system 太阳系 remote control 遥控 (3) v-ing +另一词 washing machine 洗衣机 driving license 驾驶执照 (4) 其他方式 by-product 副产品 editor-in-chief 主编