Question

17．Great changes have taken place in American family life because of the（56）development（develop）of science and industry．In the past，when more Americans lived on farms，a typical family（57）had（have）many children．In a farm family，parents and their children often lived （58）withgrandparents．Often，too，uncles and aunts lived nearly．（59）Butwhen industry became more important than agriculture in American life，families became smaller （60）becauseindustry requires workers （61）whoare ready and able to move off the land and to move again whenever necessary．And large families cannot move （62）easily（easy） from place to place as smaller families can．So people tend to have smaller families nowadays．
 In the future，because of industrialization，families will（63）be required（require） to move even more frequently，and will be even smaller．A typical family may remain childless consists of a man and woman only．A small number of families may take childraising as their chief work．At （64）thesame time they may also raise other people's children，（65）leave（leave） those families free to move from place to place．

Answer 1

分析 本文介紹了美國家庭的巨大變化，農(nóng)業(yè)時期整個大家庭住在一起，工業(yè)時期家庭變得越來越�。�

解答 56．development考查名詞．根據(jù)句意：由于科學(xué)和工業(yè)的發(fā)展．because of是介詞短語，后跟名詞作賓語，所以用名詞development．
57．had 考查時態(tài)．根據(jù)時間狀語in the past在過去，所以用過去時，答案填had．
58．With 考查介詞．根據(jù)句意：父母和孩子常常和祖父母住在一起，live with"和…住在一起"．
 59．But考查連詞．根據(jù)上文是農(nóng)業(yè)的家庭，后文是工業(yè)的家庭，兩者之間是轉(zhuǎn)折關(guān)系，所以用but連接．
60．because 考查連詞．根據(jù)句意：家庭變得小是因為工業(yè)需要工人．because是連詞"因為"．
61．who 考查定語從句．先行詞是workers，在定語從句中做主語，所以用關(guān)系代詞who引導(dǎo)．
62．easily 考查副詞．根據(jù)句意：大家庭不能輕易地從一個地方搬到另一個地方，此處用副詞修飾動詞move．所以填easily．
63．be required　考查被動語態(tài)．根據(jù)句意：家庭將需要更頻繁地移動．family與require之間是被動關(guān)系，所以答案填be required．
64．the 考查固定短語．　at the same time是英語的固定搭配"同時"．
65．leaving 考查非謂語．根據(jù)句意：他們也可能撫養(yǎng)其他人的孩子，讓那些家庭自由地從一個地方搬到另一個地方．此處是現(xiàn)在分詞在句中做結(jié)果狀語從句．

點評 語法填空是通過語篇在語境中考查語法知識的運用能力，在解題前應(yīng)快速瀏覽短文掌握大意，在讀懂短文的基礎(chǔ)上，結(jié)合短文提供的特定的語言環(huán)境去逐句分析．要解決好語法填空，離不開堅實的語法知識，有了堅實的語法知識才能對語言進(jìn)行正確的分析和判斷，從而答對題目．