【正文】 erence.4. that和what引導名詞性從句的區(qū)別: that在從句中不充當成分,而what在從句中充當一定的成分, 如主語、表語、賓語等。 連接副詞where, when, why, how。關系代詞的選用比較復雜, 它受下列條件的制約:(1)先行詞是指人還是指物。或先行詞前有first,last, only, few, much, some, any, no等修飾時。如果介詞被置于從句句末, 則可用that代替which或whom,且that這時可省去。ll start out without you.As (so) long as you keep on trying, you39。now(that)表示既然。In order that the grass and flowers could bloom again,it was necessary that the rocks should be removed.She got up early so that she could catch the first bus.(六)結(jié)果狀語從句結(jié)果狀語從句一般由下列連詞引導: so that, so…that, such…that。He made some changes as you had suggested.She was behaving as if (though) she hadn39。They climbed to the top of the building in order that they could get a bird39。Since it is so hot, let39。如instantly, immediately, directly, the day, every time, the minute, the second, the moment等。 which在從句中可充當主語、賓語等, as在從句中一般只充當主語。 如先行詞為reason, 則用why。同位語從句一般用來解釋說明這些名詞的具體含義和內(nèi)容。從 句 從句按其在主句中的句法功能可分為三類: 即名詞性從句、形容詞性從句(即定語從句)和副詞性從句(即狀語從句)。We are familiar with the idea that all matter consists of atoms.The news that we are invited to the conference is very encouraging.二、定語從句引導定語從句的關聯(lián)詞包括:(1)關系代詞:that, which, whose, who, whom, as。I39。which與as引導此類定語從句的區(qū)別在于: which只能置于句中或句末, 而as的位置比較靈活, 可置于句中、句末, 又可置于句首。Immediately he arrived, he started describing us what had happened.The day he returned home, his grandpa was alrady dead.(二)條件狀語從句引導條件狀語從句的從屬連詞有: if, unless, as (so) long as, only if(只要)。s go ,我們?nèi)ビ斡景?。seye view of the city.Ask her to hurry up with these letters so that I can sign them.Take