【正文】
Unit2 grammar and usage Modal verbs (1)He can run the 100m sprint in 11 seconds. (2)Can the girl read before she goes to school? ought to/should ,“應(yīng)該”,用于各種人稱 ? You should be polite to your teacher. ? You shouldn’t spend so much time playing puter games. ,“想必,估計(jì)”的意思. If they start today, they should arrive there in two days. ”照說(shuō)應(yīng)該 ……” I wonder where Mary is. she should be here now. ,表示虛擬語(yǔ)氣. He suggested that I (should) go to shanghai tomorrow. He demanded that we (should) solve the problem at once. ,憂慮,惋惜等感情色彩. I am surprised he should eat so little every day. Have to/must ? have to 表示客觀需求 ? must 表示主觀愿望 ? Everyone has to go to school at the age of 7 in the country. ? We must wok hard to make our country strong and ri