'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 1. 由时间状语来判定 一般说来,各种时态都有特定的时间状语。与过去完成时连用的时...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 现在完成时往往同表示不确定的过去时间状语连用,如already(肯定), yet(否定,疑问), j...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 过去分词变化规则如下: 1 、规则动词:规则动词的过去分词的构成规则与规则动词的...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 现在完成时用法搜索 1. 现在完成时用来表示过去已经完成的动作对现在造成影响或后果...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 表示未曾实现的希望或打算,主要用于 hope, want, expect, think, suppose, plan, mean, intend 等动词...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 表示在过去某一时刻或某一动作之前已经完成了的动作(即所谓的过去的过去)或表示从过...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 过去完成时的动词变位 由助动词haber的过去未完成时加上变位动词的过去分词构成 hab...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 过去完成时的被动语态常用于以下情况: (1)表示过去某一时间以前已经完成的动作,常...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 在宾语从句中的运用: Lizzy asked John what the professor had said in class. 在课上,利兹问约翰,...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 过去完成时的概念与结构 概念:表示在过去某一时间或动作之前已经发生或完成了的动...