一般過去式構(gòu)成：表示一般過去式的動(dòng)詞通常用動(dòng)詞的過去式形式來表示，而動(dòng)詞的過去式是在動(dòng)詞原形的基礎(chǔ)上變化的。動(dòng)詞的過去式可分為規(guī)則動(dòng)詞和不規(guī)則動(dòng)詞。規(guī)則動(dòng)詞的過去式變化如下： 一般情況下，動(dòng)詞詞尾加 -ed 。

worked, played, wanted, acted

以不發(fā)音的 -e 結(jié)尾動(dòng)詞，動(dòng)詞詞尾加 -d。

Lived, moved,　decided, declined, hoped, judged, raised, wiped

以輔音字母 + y結(jié)尾的動(dòng)詞，把-y變?yōu)?i 再加-ed。

studied, tried, copied , justified, cried, carried, embodied, emptied

以一個(gè)輔音字母結(jié)尾的重讀閉音節(jié)動(dòng)詞，雙寫詞尾輔音字母，再加 -ed。

stopped, begged, fretted, dragged, dropped, planned, dotted, dripped

不規(guī)則動(dòng)詞的過去式變化規(guī)律性不強(qiáng)，須多加記憶。

go - went， make - made， get - got

buy - bought， come - came， fly-flew

其結(jié)構(gòu)是"主語+動(dòng)詞的過去式"。be動(dòng)詞的過去式為was, were;行為動(dòng)詞的過去式有規(guī)則變化和不規(guī)則變化兩種，規(guī)則變化有以下幾種情況：1)直接在動(dòng)詞原形末尾加-ed. e.g. work-----worked; ask------asked; 2)以e結(jié)尾的動(dòng)詞只加-d. e.g. arrive-----arrived; like-----liked.3)末尾只有一個(gè)輔音字母的重讀閉音節(jié),應(yīng)先雙寫這個(gè)輔音字母,再加-ed. e.g. shop-----shopped; 4)以"輔音字母+y"結(jié)尾的動(dòng)詞,先把y變成i,再加-ed. e.g. carry----carried; study------studied.有些動(dòng)詞變過去式是不規(guī)則的,e.g. fly------flew; break-----broke; teach-----taught. 這些需要象生單詞一樣記住. 其句式變化分為兩種情況1)含有be動(dòng)詞的依然在be上做文章. e.g. I was born in 1980. I was not born in 1980. Were you born in 1980? 2)含有行為動(dòng)詞的變否定句要在行為動(dòng)詞前加助動(dòng)詞didn't.,同時(shí)把動(dòng)詞變成原形; 變一般疑問句,在句首加助動(dòng)詞did,同時(shí)把動(dòng)詞變成原形. e.g. I bought a gift for my mum yesterday. I didn't buy a gift for my mum yesterday. Did you buy a gift for your mum yesterday?

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