23. hard 努力 work hard

　　hardly 几乎不 The boy hardly does his homework.

　　24. healthy 健康的 keep healthy

　　health 健康 it’s good for your health

　　healthily 健康地 eat healthily

　　25. if 如果 主将从现 If he comes, I’ll call you.

　　是否 I don’t know if he will come here.

　　whether 是否 (如与or连用，则用)

　　I wonder whether he’ll come or not.

　　weather 天气

　　What will the weather be like tomorrow?

　　26.include 动词 包括

　　The list includes the names of many famous writers.

　　including 介词

　　They have many pets, including three cats.

　　27. invent 动词 发明 Edison invented a lot of things.

　　invention 名词 发明 The invention made much difference to humans.

　　inventor 名词 发明者 Edison was a great inventor.

　　28. last 上一个的 last year;

　　最后的 make her last apperance

　　动词，持续 The meeting will last one and a half hours.

　　lasting 形，持久的 a lasting value

　　29. lie 名词，谎言 tell a lie

　　动词，说谎 He is always lying to us.

　　动词，位于Japan lies to the east of China.

　　动词，躺，平放 He likes lying on the grass.

　　躺，平放;位于：lie—lay---lain

　　说谎：lie-lied-lied