來源:網(wǎng)絡(luò)來源 作者:中考網(wǎng)編輯 2021-03-21 18:47:53
1)引導(dǎo)主語從句時(shí)。例如:
Whether he will come to the party is unknown.
2)引導(dǎo)表語從句時(shí)。例如:
The question is whether I can pass the exam.
3)在不定式前。例如:
I haven’t made up my mind whether to go there or not.
。4)so…that, such…that
1)so…that中的so是個(gè)副詞,其后只能跟形容詞或副詞,而such…that中的such是個(gè)形容詞,后接名詞或名詞短語。例如:
I’m so tired that I can’t walk any farther.
It was such a warm day that he went swimming.
2)如果在名詞之前有many, much, little, few時(shí),用so,不用such。例如:
He has so little education that he is unable to get a job.
I have had so many falls that I am black and blue all over.
(5)either…or…, neither…nor, not only…but also…
這三個(gè)連詞詞組都可連接兩個(gè)并列成分。當(dāng)它們連接兩個(gè)并列主語時(shí),
謂語動(dòng)詞要隨相鄰的主語變化。例如:
Either you or he is wrong.
Neither he nor his children like fish.
Not only the teacher but also the students want to buy the book.
。6)although, but
這兩個(gè)連詞不能用在同一個(gè)句子中。例如:我們不能說“Although he is
over sixty, but he works as hard as others.”這個(gè)句子應(yīng)改為:Although he is over sixty, he works as hard as others.或He is over sixty, but he works as hard as others.
。7)because, so
這兩個(gè)連詞同樣不能用在同一個(gè)句子中。例如:我們不能說“Because John
was ill, so I took him to the doctor.” 這個(gè)句子應(yīng)改為Because John was ill, I took him to the doctor.或John was ill, so I took him to the doctor.
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