新一轮中考复习备考周期正式开始，中考网为各位初中三年级考生整理了各学科的复习攻略，主要包含中考必考试知识点、中考常考要点、各科复习办法、考试答卷方法等内容，帮助各位考生梳理常识脉络，理清做题思路，期望各位考生可以在考试中获得优秀成绩！下面是《2018中考英语要点：从属连词使用方法》，仅供参考！
从属连词使用方法：从结构上说，英语连接词分两大类：并列连词和从属连词。并列连词连接两个或两个以上地位平等的字、词组或分句。比如：(1) Air and water are indispensable to me.(2) She likes going out with friends or playing outdoor games.(3) Most workers have a good income, so they look very happy.从属连词连接两个或两个以上的分句，形成复杂句中的从属分句。比如：(4) He said that he did not want to go .(5) Many things have happened since I last saw him.(6) You may come if you want to.从属连词用来连接各种从句。until(till)直到，在用until表达时间状语的句子中，主句中的动词是要十分小心去选择的。如动词是持续行动词，它要用一定句，如：I studied hard until 12 oclock last night.假如动词是瞬间截止性动词，则要用否定句，如:He didnt go to bed until his mother came back.由since,for,by,before, 来引导的时间状语从句。since 引导的时间状语是动作的开始时间，如:I have studied English since 1990.而by引导的时间状语一般是动作的结束时间，如：I had learned 25 English songs by the end of last term.
