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—I39。to improves +形容詞+for sb to do sth。掌握固定短語。B. 直到…為止,B. unless除非,如果不,連詞。D.表示目的,應(yīng)用不定式,故答案為C。用動詞不定式作目的狀語,因此用to learn,故選C。注意在句中做目的狀語。makekeptC.serve。D. 根據(jù)句意可知許多超市停止提供免費的塑料袋的目的是保護環(huán)境,用動詞不定式表目的,To protect,故選A。tD.B.。30.For more than once, our head teacher asks us ___________ the habit of keeping a diary. A.makedon39。26.________ the environment, many supermarkets stopped providing free plasticbags. A. ordering【點評】考查動詞和動名詞。 【點評】考查動詞不定式的基本用法。B.D.if?!军c評】考查動名詞的用法,掌握固定搭配。seeing【答案】B 【解析】【分析】露西和莉莉決定去看下鄉(xiāng)的姑姑。seeit39。故選A。losing weight【答案】B 【解析】【分析】句意:一一你姨晚餐只吃一塊面包?一一是的,為了減肥,她只吃一點。. She looks slimmer than before.A.s dangerous for us ______ it while crossing the street.A. learningAI是名詞,___ in many fields做名詞AI的定語,AI是動作use的承受著,并且句子是簡單句,已經(jīng)有謂語will,所以用動詞過去分詞作定語,即used,be used to do ,will是情態(tài)動詞,所以be還是用原形be,故選A。in many fields will C.故選C。droppingC.to join join takenB.improvedimproving【答案】 C 【解析】【分析】句意:我們應(yīng)該做我們能做的事提高我們的英語。is used, be usedfor。s + adj +for/of sb to do ,要用介詞for;形容詞說明人時,要用介詞of。【點評】考查固定的句型it39。ll do what I can ______ you.A.B. to protect15.Mr. Zhou is good at cooking and he has decided ______ his own restaurant. A.opened【點評】考查動詞不定式,牢記固定搭配。To keeplearn18.He took off his expensive watch ____ the fact that he was rich. A. itTake。keep… from阻止; take action采取行動;空格后的非謂語動詞部分是表示采取行動的目的,所以應(yīng)該用動詞不定式,故選C。C.to having【答案】 A 【解析】【分析】句意:因為大雨,我們學校不得不推遲召開運動會?!獙Σ黄?,先生。Protectswhere shall we meetD. 【點評】考查固定搭配,注意promise to do的用法。B.s good manners. A.你決定在哪兒見了嗎?—還沒有。D.為什么不考慮點別的呢?they指代的是前面提到的香辣雞翅漢堡和玉米沙拉,與動詞serve之間是被動的關(guān)系,應(yīng)該用被動語態(tài)的形式;consider doing 。C.【點評】