seem的四种主要用法如下:
seem like:
- 用法:seem like + 名词/代词/从句,表示“看上去像”。
- 示例:The weather today seems like it’s going to rain.
seem to do/be doing/have done:
- 用法:seem to + 动词原形/进行式/完成式,根据时态选择相应的形式,表示“似乎在做某事/似乎正在做某事/似乎已经做了某事”。
- 示例:
- She seems to be happy.
- They seem to be studying hard.
- He seems to have forgotten about the meeting.
seem to be + 形容词/名词:
- 用法:这是seem to do的一种特殊形式,表示“看上去是……的”。
- 示例:The book seems to be interesting.
seems that:
- 用法:seems that + 从句,表示“似乎……”。注意,当主语为第三人称单数时,使用seems;主语为复数或第一人称、第二人称时,使用seem。但在日常口语和非正式写作中,人们常以“It seems that…”开头,以避免直接以主语开头造成的句子头重脚轻。
- 示例:It seems that he doesn’t want to come.或者简化为:He seems that he doesn’t want to come.
总结:seem是一个常用的系动词,其后可接多种结构来表达不同的含义。掌握这些用法有助于更准确地理解和使用seem这个词。