must + 动词原形
①不得不, 必须；②(对现在的)推测She must be a model.She is fifteen years old.
She must be fifteen years old.
She must be at most fifteen years old. She must be at least fifteen years old.
in spite of不管，尽管(“of”为介词, 后面一定会加名词、代词或从in spite of this 尽管如此
In spite of this, I still like school.
（school 前不加“the”表示上学，加“the”只表示学校）
In spite of what you have said about her, she is much better than M
in (+颜色、衣服)穿着……样的衣服，用介词短语取代动词，避免了一句话中出现两个动词The boy in green.
in a bright red dress鲜红色的连衣裙
bright,orange-coloured dress 鲜艳的桔黄色衣服
??Key structure
情态助动词must
Must 制，邀请，决心，不可推卸的责任”等多处含义译为“必须”，可以表示“必要，命令或强。它
时。
没有时态和人称变化，通常只用于现在时和将来