課后練習：

1、What doesThanksgivingremindAmericans ?

A. in B. at C. up D. of

2、In America,onlyin a few cases live under one roof.

A. does more than one household B.do more than one household

C. more than one household

3、Many homes like a democracy.

A. run B. runned C. are run

4、Overhalf of U.S. marriages now end divorce.

A. to B. in C. at D. of

5、More than onein four American children in single-parent homes.

A. are growing up B.is growing up C. were growing up

6、They realizethat problems in family lifein recentyears

seriousconsequences.

A. have brought about B.has brought about

C. had brought about D.brought about

7、Not justin America, all over the world, people recognize theimportance of strong families.

A. but B. only C. in

8、If you have afamily，every day be Thanksgiving.

A. might B. would C.should D. could

關于本課：又是一篇關于美國家庭的文章。本課中現在進行時態應用較多，可重點學習下這部分內容的語法知識。還有就是有個以“only”開頭的倒裝句，順便也熟悉下倒裝句吧。

關于only倒裝的用法

• 在句首的only后面跟了副詞、介詞短語或從句等狀語時，句子用倒裝結構，即“助動詞或情態動詞”提前至主語之前。例如：

1、Only then willI have a chance ofachieving my dream. 只有倒那時我才將會有機會實現我的夢想。

2、Only after abitter struggle wasthe aim achieved. 只有在艱苦的斗爭之后目標才得以實現。

3、Only in thiswaycanyou learn Englishwell. 只有用這種方法你才能學好英語。

4、Only when thewar was over in 1918 was he able to get back to work. 只有在1918年戰爭結束時他才重回工作崗位。

• 如果only后跟的是主語，就不用倒裝結構了。例如：

1、Only theteachers are allowed to use the room．（不用倒裝結構） 只有老師們被允許使用這個房子。

2、Only five menwere hurt in the accident．（不用倒裝結構）只有5個男人在這場事故中受傷。

還有就是only和所修飾的狀語不在句首時，句子不使用倒裝結構。例如：
1、Theboy was helped out only when his father arrived in a hurry.（不用倒裝結構）只有當男孩子的父母匆忙趕到時，男孩才擺脫困境。