1) since +過(guò)去一個(gè)時(shí)間點(diǎn) 如具體的年、月、日期、鐘點(diǎn)、1980, last month, half past six...I have been here since 1989.2)... [查看全文]
1) 用于完成時(shí)的區(qū)別延續(xù)動(dòng)詞表示經(jīng)驗(yàn)、經(jīng)歷; 瞬間動(dòng)詞表示行為的結(jié) 果,不能與表示段的時(shí)間狀語(yǔ)連用。He has completed the work.... [查看全文]
分詞前置 We can see the rising sun. 我們可以看到東升的旭日He is a retired worker. 他是位退休的工人分詞后置 (i分詞詞... [查看全文]
1)have +過(guò)去分詞,構(gòu)成完成時(shí)態(tài),例如:He has left for London. 他已去了倫敦。By the end of last month, they had fini... [查看全文]
1)協(xié)助主要?jiǎng)釉~構(gòu)成謂語(yǔ)動(dòng)詞詞組的詞叫助動(dòng)詞(Auxiliary Verb)。被協(xié)助的動(dòng)詞稱作主要?jiǎng)釉~(Main Verb)助動(dòng)詞自身沒(méi)有詞義,不可單獨(dú)... [查看全文]
1)相互代詞只有each other和one another兩個(gè)詞組。他們表示句中動(dòng)詞所敘述的動(dòng)作或感覺(jué)在涉及的各個(gè)對(duì)象之間是相互存在的,例如:It is... [查看全文]
1)物主代詞既有表示所屬的作用又有指代作用,例如:John had cut his finger; apparently there was a broken glass on his ... [查看全文]
表示數(shù)目多少或順序多少的詞叫數(shù)詞,數(shù)詞分為基數(shù)詞和序數(shù)詞。表示數(shù)目多少的數(shù)詞叫基數(shù)詞;表示順序的數(shù)詞叫序數(shù)詞。一、基數(shù)詞1)基數(shù)詞... [查看全文]
1) 兩個(gè)形容詞都有冠詞,表示兩個(gè)不同東西。He raises a black and a white cat. 他養(yǎng)了一只黑貓和一只白貓。The black and ... [查看全文]
定冠詞the與指示代詞this,that同源,有"那(這)個(gè)"的意思,但較弱,可以和一個(gè)名詞連用,來(lái)表示某個(gè)或某些特定的人或東西。1)特指雙方都... [查看全文]