高中英语必修四unit3知识点全版.ppt

on the edge of 在...的边缘
Instead they are hiding in small hut on the edge of a mountain during a snowstorm with nothing to eat.
pick off 摘掉、拔去、逐个的瞄准射杀
The insecticide might harm the flowers. Let's pick off the insects by hand.
必修四unit3
课本知识点及重点句子
break into 强行闯入；突然...起来(bur break into the same shop three times?
The man broke into laughter. up to now =until now 与完成时连用
as if (as though)引导的方式状语从句或表语从句，若从句所述 内容与事实相反，则用虚拟语；否则用陈述语气。
表示与现在事实相反的愿望 ：
主语 +as if(though) + 主语 + 动词过去式
（be 一律用were）
表示与过去事实相反的愿望 ：
主语 + as if(though) + 主语 + had done
精选整理
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1.If your hands are cold, _k_e_ep__th_e_m__i_n_t_h_e_p_o_c_k_e_t_s_. (就把手 插进裤兜里。)
He __l_ef_t_h_i_s_b_o_o_k_o_p_e_n_.__(他把书摊开放在桌子) on the desk
and went out.
As time went by, he began making films.
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in search of 为了寻找...
The little tramp and his friend have rushed there in search of gold but without success.
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2.He made people laugh at a time when they felt depressed, so they could feel more content with their lives. at a time +when +定语从句 “在....的时候”
At a time when I was a little boy, my mother used to tell me to be polite to others.
从句表示与将来相反的愿望：
主语 +would／could／might＋动词原形
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Don’t handle the vase as if it _w__e_r_e_(be) made of steel.
(1)leave + O +adj. His illness left him weak. (2)leave + O + v-ed You can't leave your homework unfinished before going to bed.
(3)leave + O + v-ing What he said left me thinking deeply. (4)leave + O + 介词短语 The school left the class in the charge of Mr Yang.
World economy crisis broke out at a time when I was out of work.
at a time还可以表示“一次”。注意它和once的区别。 at a time“一次”，表示许多次中的一次；而once“一 次”，表示只有一次。
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3.He tries cutting and chewing the bottom of the shoes as if it were the finest steak. Then he picks out the lace of the shoe and eats it as if it were spaghetti.
2.These gloves will _k_e_e_p_y_o_u_r__h_an_d_s__w_a_r_m__(能让你的手暖 暖的).
3.Don't _l_e_av_e__h_im__w__a_it_in_g__ outside in the rain（别让他在外 面雨里等）.
4. I'm sorry. I've _k_e_p_t_y_o_u__w_a_i_ti_n_g_(让你久等了).
5. They le_f_t_th_e__b_re_a_k_f_a_s_t _u_n_to_u_c_h_e_d(touch). 他 们 没 动 早 餐。
6 .She _k_e_p_t _h_e_r _e_y_es__s_h_u_t (闭着眼睛)and stayed where she was.
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keep to 不偏离、不离开； 遵守、遵循；忠于、信守
It was an interesting experience as it was clear that he did
not keep to a strict budget. 精选整理
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1.Unfortunately his father died, leaving the family even worse off.
Up to now, nobody has been able to do better than Charlie Chaplin.
Not that+ 从句 并不是说....
“It is not that+从句”的省略形式
Not that Charlie's own life was easy! as time went by 随着时间的推移 with time going by