how often 多久一次
how many多少 3
how long 多久
how far 多远 5
锻炼 take/do exercise 阅读 do some reading 6．health
健康;健康状况 n keep healthy habit
习惯;习性 n get into the habit of 养成
try to do 尽力去做某事 ,努力想达到目的 He tried to climb that tree
他努力想爬上那棵树
try doing 尝试,试着做某事 ,只是试着去做，没有说十分想成功,作到的意思
试比较: He tried climbing that tree
他试着爬那棵树
had better
do sth
keep 保持;使保持某种状态 v
keep +形容词 （保持
） keep doing sth 一直做
have a talk 谈话 have a tea 喝茶 have a rest 休息一会儿 have a class 上课 have a hike 远足 have a picnic 野炊 have a concert 举办音乐会 have a visit 参观；访问 have a look 瞧一瞧 have a sleep 睡一会儿觉 have a headache 头痛 have a stomachache 胃痛；肚子痛 have a toothache 牙痛 have a sore throat 喉咙痛 have a cough 咳嗽 have a cold 感冒 have a fever 发烧 have a sore back 背痛 9
advice 不可数名词，建议，意见
Ask sb
for advice 征询某人的意见 Gi
