B.构词记忆法 1.constant adj.连续不断的→__c_o_n_s_t_a_n_tl_y_ adv.不断地 2.previous adj.在前的;早先的→_p_r_e_v_i_o_u_s_ly__adv.以前, 先前 3.uncertain adj.不确切的;无把握的→_c_e_r_ta_i_n__ adj. 确定的;确信的;无疑的 4.surrounding adj.周围的→_s_u_r_ro_u__n_d_in_g_s_n.周围的事 物;环境
辨析
constant, continual, continuous
adj.不断的,经常的。强调始终如一地 constant
经常出现。
adj.连续不断的,频繁的。表示时断时 continual
续地发生。
adj.不停的,连续不断的。强调中间不 continuous
停顿。
7.switch n. 开关;转换 vt. 转换 You pressed the wrong switch.你按错了开关。 He switched the light on.他打开了灯。 He studied chemistry and then switched to biology. 他原来学化学,后来改学生物。 make a switch in 在某一方面做出改变 switch to 转(换)到 switch on/off=turn on/off 打开/关掉
Instant foods are more and more popular among people nowadays.
如今,速食方便食品越来越受到人们的欢迎。
In an instant, he took off his coat and jumped into the water.