躺：lie lay lain lying
放置，下蛋：lay laid laid laying
2．逻辑关系：
1）列举/种属关系：
such…as; especially; in particular; specifically; for example; for instance; likely;
2）因果关系：
because (for); due to; owing to; thanks to; since; for; as; for the reason that; seeing that;
3）并列/递进：
besides; likewise; moreover; also; too; what’s more; apart from; except; furthermore;
not noly…but also….; in addition;
4）转折/让步关系：
however; but; never the less; nonetheless; whereas; still; though; although; anyhow; anyway; in any case; yet;
5）对比关系：
by contrast; in contrast; by comparison; like; as…as; on the contrary; conversely; oppositely; ….than….;
逻辑关系举例1：Test 4
Sometimes homework is returned 76 brief written comments but without a grade.
76. A) by B) in C) for D) with
逻辑关系举例2：Test 2
The United States is well-known for its network of major highways designed to help a driver get from one place to another in the shortest possible time. __71__ these wide modern roads are generally __72__ and well maintained, with __73__ sharp curves and many straight __74__, a direct route is not always the most _ 75__ one.