我們應該制定一項計劃來應付目前嚴峻的形勢,這一點非常重要.

　　That a new teacher will come to teach us geography is true.

　　一位新老師將來教我們地理,這是真的.

　　[鞏固練習]

　　4. _______ what they told me really true?

　　A. Has B. Is C. Does D. Have

　　5. It matters little _______ a man dies, but _______ matters much is _______ he lives.

　　A. how; what; how B. how; it; how C. why; it; why D. that; what; that

　　6. _______ she couldn t understand was _______ fewer and fewer students showed interest in her lessons.

　　A. What; why B. That; what C. What; because D. Why; that

　　7. It is pretty well understood _______ controls the flow of carbon dioxide in and out the atmosphere today.

　　A. that B. when C. what D. how

　　8. _______ fashion differs from country to country may reflect the cultural differences from one aspect.

　　A. What B. That C. This D. Which

　　9. -What made her parents so angry?

　　- _______ she had failed in the examination.

　　A. As B. Because C. Since D. That

　　2)引導詞if和whether

　　if和whether引導動詞后的賓語從句時一般可通用,但介詞后的賓語從句、主語從句(放在句首時)、表語從句常由whether引導.

　　例如:

　　Whether she will go home or not is unknown.

　　她是否回家還不得而知.

　　Whether we shall raise ducks or geese remains to be decided.

　　我們是養(yǎng)鴨還是養(yǎng)鵝仍沒決定.

　　=It remains to be decided whether/if we shall raise ducks or geese.

　　[鞏固練習]

　　10. _______ we ll go camping tomorrow depends on the weather.

　　A. If B. Whether C. That D. Where

　　3)其它引導詞

　　連接代詞who, which, whom, whose有各自的意義,起連接作用,并在從句中充當語、賓語、表語、定語等;連接副詞when,where, why, how等有各自的意義,起連接作用,并在從句中充當狀語.

　　[鞏固練習]

　　11. -Do you remember _______ he came?

　　-Yes, I do. He came by car.

　　A. how B. when C. that D. if

　　12. It was a matter of _______ would take the position.

　　A. who B. whose C. whom D. whomever

　　13. -I drove to Zhuhai for the air show last week.

　　-Is that _______ you had a few days off?

　　A. why B. when C. what D. where

　　14. I read about it in some book or other, does it matter _______ it was?

　　A. where B. what C. how D. which

　　三、語氣

　　在It is necessary / natural / important / strange...+ that-clause這類句型里,that所引導的主語從句中謂語動詞用"should +原形",表虛似語氣.

　　例如:

　　It is necessary that the problem should be settled at once.

　　這個問題必須馬上解決.

　　It s strange that he should have gone away without telling us.

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