2.Many of these chemicals can lead to cancer or other illnesses.

　　很多化学成分能导致癌症或其他疾病。

　　【观察思考】

　　(1)The car accident led to his being killed.

　　那次车祸导致他死亡。

　　(2)All roads lead to Rome.条条大路通罗马。

　　(3)Eating too much sugar can lead to health problems.

　　吃太多糖会导致健康问题。

　　(4)His carelessness led to his failure.

　　他的粗心导致了他的失败。

lead to 通向;导致;造成(后果)

注意:lead to中的to为介词,该短语后可跟名词或动词-ing形式。

result in 导致

result from 由......导致

　　【尝试运用】

　　单项填空

　　The students in the university are all taking courses 　　　 a degree.

　　A.sticking to B.leading to C.turning to D.referring to

　　3.They focus on keeping their soil rich and free of disease.

　　他们主要是想保持土壤肥沃且免受病害。

　　【观察思考】

　　(1)He focused his mind on his lessons.他把心思集中在功课上。

　　(2)Today we're going to focus on the question of homeless people.

　　今天,我们主要讨论无家可归者的问题。

　　(3)A near-sighted person cannot focus accurately on distant objects.

　　近视的人看不清远处的物体。

focus on 集中(注意力等)于......;对(某事或做某事)予以注意;使聚焦于

focus one's attention on sth= center/concentrate/fix one's attention on sth集中注意力于......

　　【尝试运用】

　　完成句子

　　(1)在我看来,学校应该把精力集中在教学上。

　　In my opinion,schools should　　　　　　　　　　　　.

　　(2)他把相机对准了远处的高楼。

　　He　　　 his camera　　　 the huge building in the distance.

　　➡Step 3　Sentence structures we are going to learn

　　1.In 1973,he became the first agricultural pioneer in the world to grow rice that has a high output.

　　1973年,他成为世界上第一位种植高产水稻的农业先锋。

　　【观察思考】

　　(1)He is the first to finish the homework.

　　他第一个完成作业。

　　(2)New Zealand is the first in modern times to allow women to vote.

新西兰成为现代史上第一个允许妇女有选举权的国家。