來源:網(wǎng)絡(luò)來源 作者:中考網(wǎng)編輯 2021-03-21 18:46:22
中考網(wǎng)整理了關(guān)于2021中考英語連詞知識點之從屬連詞用法,希望對同學(xué)們有所幫助,僅供參考。
從結(jié)構(gòu)上說,英語連接詞分兩大類:并列連詞和從屬連詞。
并列連詞連接兩個或兩個以上地位平等的字、詞組或分句。例如:
(1) Air and water are indispensable to me.
(2) She likes going out with friends or playing outdoor games.
(3) Most workers have a good income, so they look very happy.
從屬連詞連接兩個或兩個以上的分句,形成復(fù)雜句中的從屬分句。例如:
(4) He said that he did not want to go .
(5) Many things have happened since I last saw him.
(6) You may come if you want to.
從屬連詞用來連接各種從句。
until(till)直到,在用until表達時間狀語的句子中,主句中的動詞是要十分小心去選擇的。
如動詞是持續(xù)行動詞,它要用肯定句,如:
I studied hard until 12 o'clock last night.
如果動詞是瞬間截止性動詞,則要用否定句,如:
He didn't go to bed until his mother came back.
由since,for,by,before, 來引導(dǎo)的時間狀語從句。
since 引導(dǎo)的時間狀語是動作的開始時間,如:
I have studied English since 1990.
而by引導(dǎo)的時間狀語通常是動作的結(jié)束時間,如:
I had learned 25 English songs by the end of last term.
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