高中英语定语从句关系代词前介词的判断

Fill in the blanks with proper prepositions: 1. The sun gives us heat and light, _w_i_th_o_u_t__ which we can’t live. 2. The student __a_b_o_u_t__ whom we were talking just now is the best student in our class. 3. I’ll never forget the day __o_n__ which she said good-bye to me. 4. Who can give me the reason __fo_r___ which he hasn’t turned up yet?
介词的判断方法 1.从句中动词与介词和先行词与介词的搭配 关系，如：
e.g. Is that the newspaper for which you often write articles? 2. 根据从句中动词或形容词的习惯搭配，如： e.g. He is the only person of whom his parents are proud in the world. 3. 根据先行词与介词的搭配习惯，如： e.g. 1949 was the year in which the P.R.C. was founded..
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