Working the land
12. focus on
集中（注意力、精力等）于……；對(某事或做某事)予以注意；使聚焦于；使直射于
he focused his mind on his lessons. 他把心思集中在功課上。
today we’re going to focus on the question of homeless people. 今天, 我們主要討論無家可歸者的問題。
a nearˉsighted person cannot focus accurately on distant objects. 近視的人看不清遠處的物體。
聯想拓展
focus one’s attention on sth.= center/concentrate/fix one’s attention on sth. 集中注意力于……
高手過招
完成句子 （原創）
①在我看來，學校應該把精力集中在教學上。
in my opinion, schools should .
②他把相機對準了遠處的高樓。
he his camera the huge building in the distance.
答案: ① focus attention on teaching
② focused；on
重點句型
13. in 1974, he became the first agricultural pioneer in the world to grow rice that has a high output.
1974年，他成為世界上第一位種植高產水稻的農業先鋒。
不定式放在表示次序的詞the first, the last, the best以及the only, the very, the right等詞后面, 且這些詞與動詞不定式有邏輯上的主謂關系，結構為：the first/last/best/only/very/right ...+n. + to do sth.表示“第一個/最后一個/最好的一個/唯一的/恰好的/合適的……做某事的人/物”。
he is always the first to come and the last to leave.
他總是第一個來并且最后一個離開。
the last man to leave the sinking ship was the captain.
最后一個離開正在下沉的船的那個人是船長。
高手過招
單項填空
he is the last person to mary’s birthday party.（原創）
a. to invite b. to be invited
c. invited d. being invited
解析：選b。考查不定式作定語的用法。當名詞前面有序數詞或last, next等詞修飾時，名詞后面多用不定式作定語。如new zealand was the first nation in modern times to allow women to vote. 新西蘭成為現代史上第一個允許婦女有選舉權的國家。
14. using his hybrid rice, farmers are producing harvests twice as large as before.