时态<br>
一般
1.一般过去时（did): Last year Jpan experienced 2,125 incidents of school violence<br> <font color="#c41230">(通常表示完全发生在过去的事，即现在已经不再那样)</font><br>
2.一般现在时（do/does): So far the results are inconclusive<br><font color="#c41230">(可以表示现在的状态，也可以表示现在经常性、习惯性发生的事</font>）<br>
<font color="#f15a23"><i>（注意三单）</i></font>
3.一般将来时（will+do或am/is/are going to +do):We will have a less civil society<br>
4.过去将来时：（would+do或was/were going to+do): They gave justices permanent positions so they would be <br> free to upset those in power<br><font color="#c41230">（表示事情发生在过去的将来，通常与一般过去时搭配）</font><br>
进行
5.过去进行时（was/were+doing): He was searching for tiny engraved seals<br>
6.现在进行时（am/is/are+doing):Home prices are holding steady in most regions<br>
7.将来进行时（will be doing<br>
完成<br>
8.过去完成时（had +done):He had never gambled before the casino sent him a coupon for $20 worth of gambling.<br><font color="#c41230">(表示“站在过去的时间点回头看之前发生的一件事的完成结果”，过去的之前）</font><br><i><font color="#c41230">(表达的是一个时间段，从“过去的之前”到“过去”）</font></i><br>
<font color="#f1753f"><i>注意：“完成”包括<br>“全部完成”和“部分完成”</i></font>
9.现在完成时（have/has+done):The question of GDP and its usefulness has annoyed policymakers for over<br> half a century.<br><font color="#c41230"><i>(从“现在的之前”到“现在”）</i></font><br>
10.将来完成时（will have+done):……relaxation will be in front of smell-television,and digital age will have arrived.<br>
完成进行时<br>
11.现在完成进行时（have/has been+doing):We have been working hard for several months<br><font color="#c41230">(相比于现在完成时，其更强调完成的过程性）</font><br>
12.过去完成进行时（had been+doing)<br>
13.将来完成进行时(will have been+doing)<br>
情态<br>
情态动词后要接动词原形，算作一个谓语动词;
must; can-could; will-would; may-might; should<br><font color="#c41230">(过去时可以表示现在的一种更委婉和客气的语气）</font><br>
语态
被动语态
构成：be+done
被动语态与时态的结合：把be 变成对应的各种时态<br>
被动语态与情态的结合：情态动词+be done<br>
主动语态<br>
