must 的用法 一、表義務(wù), 必須 。例如: You must talk to them about their study. 你必須同他們談?wù)勱P(guān)于他們學(xué)習(xí)的事。 二、在否定結(jié)構(gòu)中表不許。例如: You mustn t leave here. 你不能離開這兒。 三、表推測,
Words are used to form patterns of English grammar and syntax. Each word falls into one of eight categories referred to as parts of speech. Here are the eight commonly recognized parts of speech. 英
1. It must be pointed out that it is one of our basic State policies to control population growth while raising the quality of the population. 2. It is (has been) estimated that the worlds population