【正文】
’t waste our 。例如 : —Must I e here tomorrow?我明天必須來這里嗎 ? —No,you needn’ ,你不必。必定是 ”,表示推斷、推測(cè)。 to“必須 。側(cè)重于客觀需要 ,含有不得不或被迫之意。具體用法如下 : ( 1 ) have to強(qiáng)調(diào)由于客觀條件需要而不得不做某事。 ( 2 ) have to不能直接構(gòu)成否定句或疑問句 ,需要借助于助動(dòng)詞。例如 : What does she have to do?她必須做什么 ? Ⅰ .單項(xiàng)填空 ( B ) me,could you please tell me my car? to stop to park can I park can I park ( A )2.—What should we do to protect the fish in the river? —We throw rubbish into the river. ’t to ’t ( C ) left his homework at