Exercises
三、用所给单词的适当形式填空 1.Let’s __s_a_v_e__ (save) the trees and flowers. 2.We should be _f_r_ie_n_d_l_y_ (friend) to animals. 3.We must refuse to buy things ___m_a_d_e__ (make) of ivory. 4.Don’t walk too far. It’s easy to get _p_'p_lo_s_t__ (lose). 5.We should take actions to protect animals in __d_an_g_e_r_(dangerous). 6.You should drink enough__w_a_t_er__ (water) every day, at least eight glasses.
◆用法集萃
1.watch,look,see,read: watch看电视，看比赛；look看得动作，后加at; see强调看的结果，指看到。 read读书，看报
2. This is Bob (speaking)!我是Bob。 Is that Mary? 你是Mary吗？（打电话用语）
3.现在进行时态的构成 be +doing ,缺一不可 ①以不发音e结尾的词去 e再加 ing， 如take-taking make-making,have-having,exercise-
exercising
②需要双写词尾字母的动词有， shop-shopping,stop,,run, get,sit,dig(挖)，put begin, swim, chat. 4. I’d love / like to do sth.
