I'd never really thought about giving a smile as a gift until this morning.直到今天早上，我才真正意识到，一个微笑也是一份礼物。结构分析：I是主语，had never really thought about是谓语（其中really是词，作状语），giving a smile as a gift是-ing式词组，作宾语，until this morning是时间状语。Sometimes a smile is the best gift you can give someone.结构分析：Sometimes是状语，a smile是名词词组，作主语，is the best gift you can give someone是系表型谓语，其中you can give someone是后置定语（you是主语，can give是谓语，someone是间接宾语，the best gift是直接宾语）。
Yesterday I was in the grocery store.
昨天，我在杂货店。
结构分析：Yesterday是时间状语，I是主语，was in the grocery store是系表型谓语，其中was是系动词，过去一般时， in the grocery store是介词词组，作表语。
I saw an older man standing with the sad look on his face.结构分析：I是主语，saw是谓语，过去一般时，an older man standing with the sad look on his face是宾语，其中standing with the sad look on his face是-ing式词组，作状语。英语外刊，精读练习：1.分析下面的句子结构、时态等。I walked by and give him a big smile.Immediately, his eyes brightened and he smiled back.I don't know why he look so sad, but for that moment in time he smiled.
