'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 现在完成时基本结构 ①肯定句:主语+have/has+动词的过去分词 ②否定句:主语+have/has+...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 表示过去发生的动作持续到现在,并可能还要延续 It has been five years since he joined the ar...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 例:我去过北京。 I have gone to Beijing. 答案:I have been to Beijing. 解析:have been to+地点 是...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 现在完成时是一个与过去和现在都有关系的时态,因此,具有这样时间特点的状语都可...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 一般过去时只单纯表示过去的动作或状态,和现在不发生联系,它可以和确定的表示过...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 现在完成时的时间状语 (1)现在完成时属于现在时范围,故不能和过去的时间状语连用。...
'); (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' });})(); 现在完成时常见考法 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...
'); (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' });})(); 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...