①：school，hotel（宾馆），company，park，bar（酒吧），restaurant（餐厅），bank，supermarket（超市），
②：at present ,at the moment,at the time,now,right now(都是现在的意思）
③:sunny,cloudy,rainy，snowy，windy，wet,dry,cold,weather forecast（天气预报）,thundering(多雷暴的）
④：be was/were
begin began
bring brought
buy bought
catch caught
come came
cut cut
do did
draw drew
drink drank
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